This year is a little bit crazy so we can use this as a way to communicate if necessary. Post any questions that you have below. I will do my best to moderate the questions and respond as quickly as possible. Help one another and answer each others questions! This is a great place to find updates!
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This is what we would ask: (SEE THE RULES AT THE BOTTOM FOR ANSWERING!)
1. What does a polysaccharide consist of? a. proteins b. lipids c. carbohydrates 2. True or false. -Photosynthesis is made up of the process of lightreactions and fermentation. 3. What are advantages and disadvatages of using low power vs. high power? 4. What is the difference between a monosaccharide and a disaccharide? 5. What does the chloroplast do? a. Protect the cell b. Provide chlorophyll c. Gives energy d. Holds genetic information 6. Who was Robert Hooke and what did he do? 7.Name all the characteristics of life. 8. Name all of the functional groups and their chemical formulas. 9. Choose the three letters corresponding to the three parts of the cell theory: a. All cells come from preexisting cells b. All cells must contain functioning organelles c. The cell is the basic unit of structure in all organisms d. All living organisms are composed of one or more cells e. All cells have a beginning and an end 10. What happenes during anaphase? 11. What are 2 types of transport proteins? 12. Which of the following is true about saturated and unsaturated fatty acids? a. Saturated fatty acids have double bonds between carbon while unsaturated do not b. Saturated fatty acids are "better" for you c. Unsaturated fatty acids are liquid at room temperature 13. What is a peptide bond between? a. Lipids b. Proteins c. Chloroplasts d. None of the above 14. What is a lipid made of? a. 1 glycerol and 2 fatty acids b. 2 glycerols and 2 fatty acids c. 1 glycerol and 3 fatty acids d. 2 glycerols and 3 fatty acids 15. How many types of carbohydrates are there? a. 2 b. 3 c. 8 d. 36 16. Which solution is Hypertonic in comparison to a cell that has 60% sugar? a. 30% sugar and 70% water b. 15% sodium and 85% water c. 50% sugar and 50% water d. None of the above 17. What are the products of photosynthesis? a. C6 H12 O6 + 6O2 + 3ATP b. C6 H12 O6 + 6CO2 c. C6 H12 O6 + 6O2 d. 6CO2 + 6H2O + Light 18. Find the RNA strand for this gene: CGATGGACCAAT a. GGUACCAUGGUUA b. CGAUGGUACCAAU c. GCTACCATGGTTA d. GCUACCAUGGUUA 19. What is the difference between an independant variable and a dependant variable? 20. Where does the Kreb's cycle take place? 21. Where does the Calvin cycle take place? 22. In which organelle is protein synthesized? 23. What are the key components to a lipid? 24. What is Chargaff's rule? 25. What is the difference between a hypertonic and a hypotonic solution? 26. What is the difference between ATP and ADP? 27. Which of the following is not a characteristic of life? a. It grows and develops b. It maintains homeostasis c. It can move/be mobile d. It has metabolism 28. What is the difference between light microscopes and electron microscopes? 29. Fill in the blanks: Protons: 8 Atomic #: ________ Electrons: 9 Atomic Mass: ________ Neutrons: 7 Charge: ________ 30. What is the major difference between cohesion and adhesion? 31. In a hypotonic solution, does the cell shrink or swell? In a hypertonic solution? 32. How do you determine how many electrons to draw in an atom? 33. What is a polypeptide? 34. What is the formula for a chemical that is both a molecule and a compound? 35. Describe the role of chlorophylls and accessory pigments. 36. What are the steps of the scientific method? 37. What are the factors that affect diffusion? 38. How do you calculate the magnification of a microscope with an eyepiece of 10x and objective lens of 40x? 39. What are the 3 rules of cell theory? 40. List bonds from strogest to weakest. 41. Is Interphase part of Mitosis? 42. What are the phases of Mitosis? a. Metaphase-telophase-prophase-anaphase b. Prophase-metaphase-telophase-anaphase c. Prophase-metaphase-anaphase-telophase d. Telophase-metaphase-anaphase-prophase 43. Explain diffusion. 44. What is the chemical equation for photosynthesis? 45. What organelle is essential for photosynthesis to occur? 46. What is the purpose of mitosis? 47. What are the products and reactants of the Calvin Cycle? 48. What is the longest phase of the cell cycle? a. Mitosis b. Telesynthesis c. Interphase d. Phrophase 49. What is the role of receptor proteins in the phospholipid bilayer? 50. How do inhibitors effect the role of an enzyme? a. It makes the enzymes shrink b. Makes the chemical process go slower c. Gets in the way of the subtrates travel to the active site 51. What is the first amino acid in mRNA and what is it's codon? 52. What are the steps of Aerobic Respiration? 53. How many ATP are produced in Glycosis? 54. What are the steps of the Calvin Cycle? 55. How many centimeters are in 112 km? a. 0.000112 cm b. 11200 cm c. 11200000 cm d. 417cm 56. What is the weakest bond? a. Ionic Bond b. Hydrogen Bond c. Non- Polar d. Covalent 57. Wha is it called when water uses cohesion and adhesion to go against the force of gravity? 58. What enzyme attaches CO2 to RuBP? a. Ribose b. Rubisco c. Ribase d. Deoxyribase 59. What orgnalle is shaped like a pancake? 60. What type of RNA is in a ribosome? 61. What is the difference between a SEM and TEM microscope? 62. What are the four elements that combine in many ways to form the molecules that make up living organisms? a. C, O, H, Cl b. H, O, S, He c. H, O, C, N d. C, Li, N, S 63. Which cell type is an abundant source of lysosomes? a. skin cells b. white blood cells c. muscle cells d. pancreatic cells 64. What is an example of homeostasis? 65. What are the parts of a lipid and how many of each part do you need? 66. What is an anion and what is a cation? 67. Name the different types of lipids. 68. 425.5 hm = __________ dam 69. How many ATP are produced from the ETC in the mitochondrial membrane? 70. The bond between two amino acids is called______________. 71. How much ATP is made in the Kreb's Cycle alone? 72. What is the different between a catalyst and an enzyme? 73. What is the different between a catabolic and anabolic reaction? What about endergonic and exergonic? 74. What is the function of a lysosome? 75. What is the longest phase of Mitosis? 76. What is the start codon in mRNA? 77. How many carbons are in one monosaccharide? 78. Which of the following is not in a protein? a. R group b. carboxyl group c. glycerol group d. amino group 79. Convert 10 mm into km. 80. What are the results from the Calvin Cycle? 81. Is the cytoskeleton found in plants, animals or both? 82. If the DNA strand is "TACCGACCTTCA" what will the amino acid sequence be? 83. Convert 25 kg to cg. 84. What is the difference between tRNA and mRNA? 85. What is an organic molecule? 86. What is dissassociation? 87. What reactants are used in photosynthesis? Specifically in the Light dependent? Specifically in the Calvin Cycle? 88. What scientists are associated with the discovery of the cell theory and what role did they play? 89. What is the main purpose of the cytoskeleton? 90. Explain the difference between catabolic and exergonic. 91. How many bonds can Carbon make? 92. What are the two scientists who figured out the DNA structure? 93. What is the most abundant enzyme? 94. What are the products of the Kreb's Cycle and where are they headed? 95. Who invented the microscope? 96. What do ribosomes do? 97. If a substance has a pH level of 9, would it be considered a base or an acid? 98. If the ocular magnification of a microscope was 9x, what would be the total magnification if viewed under low power? 99. Which scientist came up with the idea that cells come from pre existing cells? 100. In what environment does plasmolysis occur? 101. Which three scientists won the Nobel Prize for their efforts in discovering the structure of DNA? 102. What is the difference between capillarity action and surface tension? 103. What is the difference between homeostasis and response to stimuli? 104. What are the chemical tests that are used to identify the macromolecules of proteins, lipids and carbohydrates? 105. How do you identify a carb, lipid and protein by looking at the structure? 106. Describe the Light dependent reactions of photosynthesis 107. Describe the Calvin Cycle? 108. Describe Glycoloysis 109. Describe the Kreb's Cycle 110. Describe the Electron Transport Chain in the mitochondria. RULES: You can only answer a question that has not been answered already. Include your name and period in the response. You also should explain your answer and how you got to that. Please avoid answering the same type of questions - CHALLENGE YOURSELF! With only one week to go until winter break (oh my goodness where has the school year gone!) let's take a look at what has been going on in class :) Monday 12/10: According to Haley B from 5th hour... Today in class, we filled out all the parts of a leaf and their functions on the leaf cross section worksheet. Then, we worked on the leaf structure lab with our lab partners. We looked at a prepared slide of a cross section and a dry mount slide of a tradescantia leaf. We drew a picture of each in our packet. When we finished that, we started cutting out the parts of a leaf to glue together and label. For homework, we had to finish the packet, including labeling the drawings, putting together our model of a cross section of a leaf, and answering the summary questions. Tuesday 12/11: Today we split our time between two activities. We began the day by talking about pigments and how light works. Then we started a chromatography lab where the students separated the pigments present in a spinach leaf. Once the lab was set up, we came back to our seat and talked through a majority of the light dependent portion of photosynthesis. (We did have to stop with the build up of Hydrogen ions which just left the kids on the edge of their seats!) Then we went back and checked in on the pigment lab results. It was really cool for the students to be able to see the colors we had been describing earlier in the day. Wednesday 12/12: Thanks to Matt B in 5th hour... Today we talked about The Calvin Cycle- the process where plants use ATP and NADPH made from the light dependent reaction to make organic compounds such as glucose. This process takes place in the Stroma of the chloroplast out side the Thylakoid. This process begins with 3 RuBP hooking to 3 CO2 (with help from the enzyme Rubisco). This creates an unstable 6-carbon molecule which breaks into two almost immediately creating 6 3-PGA molecules. Then ATP from light dependent reactions donate a phosphate and become ADP (this goes back to the thylakoid). The molecules fromed are now 6 Biphosphoglycerate. After this NADPH adds energy and the posphate breaks off (the NADPH is now NADP+ and it returns to the thylakoid). We have formed 6 G3P molecules. One of then leaves and the other five are turned into RuBP to begin the cycle all over again. It takes two G3P to form a glucose so this cycle must be repeated to make a glucose molecule. IMPORTANT: for this cycle we add CO2 and ATP and NADPH from the light dependent reactions. We get G3P (eventually glucose after another cycle) and ADP and NADPH to return to the thylakoid. There is a test on photosynthesis on Friday. The Calvin Cycle is covered in the text book on pages 120 to 121 for carbon fixation and 122-123 for a summary. Thursday 12/13: Just in from 5th hour... Today in class we reviewed all of what we had learned over the past couple of days regarding photosynthesis. We recapped all the major ideas of the Light Reaction, which was the production of ATP and NADPH, and also the Calvin Cycle, which produced glucose. After we reviewed, we were given a worksheet to complete with our partners, it was a great review for the test. Mrs. Giegler also told us that we should know the parts of a leaf, pigments, and reactants and products for the test. Prior to the test, we were given book pages in which we could read, to really enforce the information we had begun to learn. We were also given homework daily, so there were plenty of resources available for us to do well. Friday 12/14: Thanks to James F from 6th hour... Today, we took a 30-question quiz on light reactions, the Calvin Cycle, and leaf structure. After the quiz, we began to talk about glycolysis, a biochemical pathway that breaks down glucose. We took a few notes, but ran out of time to discuss it fully. For homework, we had to take one page of notes on cellular respiration. Upcoming eventsMonday 12/17:
Today we are going to dig into cellular respiration. We will start by going over the half of glycolysis that gives off energy and hopefully continue through the Kreb's cycle into the electron transport change. The day will be very heavy on notes but I hope that we will be able to tackle a majority of the difficult content early in the week so that the students have more time to digest the information. Tuesday 12/18: Our goal today will be to tackle anaerobic respiration. We will begin with a short discussion about the two versions of this type of respiration. Then we will move onto a fun little lab that shows some of the properties that we have been talking about. Wednesday 12/19: Today we will finish up anything that we have not yet completed. Then we will take some time to review enzymes, photosynthesis and cellular respiration. We have a few review packets to complete and I plan on doing a modified version of the writing on butcher paper like what we did for the big cell test. Thursday 12/20 & Friday 12/21: Depending on how the week goes we will have a test on one of these two days. I think that the students will be more focused with a test on Thursday but if we are pressed for time, I will move the test to Friday and use Thursday as a day to continue reviewing. If the test is on Thursday, we will use Friday to go over the test and then either start to take a look at DNA or use the time to watch part of an episode from the amazing series called LIFE which aired on the Discovery Channel a few years ago. Please make sure that the students talk to me if they will not be at school on Thursday or Friday so that we can determine when they should take the test. Monday 12/3: We conducted the big pineapple enzyme lab in class today. Each lab partnership was involved in a different portion of the experiment as we were trying to determine which fruit juices had the enzyme bromelain present. Bromelain is an enzyme which breaks down collagen, a protein that is responsible for gelatin becoming a gel. We also tested to see the effects of pH and temperature on the enzyme. In each test tube we included some gelatin. The goal was to see if the gelatin became a gel - if it did that meant there was no enzyme breaking apart the collagen but if the gelatin remained a liquid, it meant that there is an enzyme present breaking apart the collagen. All of the test tubes were made and put in the fridge over night. The students should have been working on creating picture procedures and generating a blank data table to fill in during class. Tuesday 12/4: I was not in class today so that students checked their results from the day before. then they had the rest of the period to work on the write for the lab report. The lab report was due on Thursday, Wednesday 12/5: For the first half of class, we went over the results from the lab and I took any questions about the report. Then we went over a few practice examples to prepare for the enzyme quiz tomorrow. Thursday 12/6: To start class today I gave the students the 7 objectives that deal with enzymes. I gave the students 10 minutes to partner up and discuss the information in each objective with their partner. Then I answered any questions before the start of the quiz. The quiz was 20 questions and many students did quite well. When the quiz was over, we took some time to clean up the test tubes from our lab. Friday 12/7: We started the day by going over the enzyme quiz and the mitosis quiz from a little bit ago. then we had a short conversation about ATP and ADP and how they relate to eachother and why they are so important for the cell. Then the students got into groups and worked through a packet to help reinforce the ideas about the packet. Anything the students did not finish in the packet became homework. What to watch for...Monday 12/10: Today we are going to begin our discussion of photosynthesis by talking about leaves and their structure and focusing on the pigment in plants that aid in photosynthesis. We will complete two labs - one where the students will split the different pigments of the plant and one where the students will view the structure of a leaf underneath the microscope. Tuesday 12/11: Photosynthesis occurs in two major steps. Today we will focus our attention on the first stage called the light dependent reactions. This is called light dependent because it requires light. the students should expect to do some reading about this stage for homework. Wednesday 12/12: Today's major focus will be on the second stage of photosynthesis called the Calvin Cycle after Melvin Calvin who won the nobel prize for his work in 1961 for his work in chemistry discovering this cycle. The goal of this stage is to make G3P which can be used to make glucose. Again students should expect to do some reading this evening. Thursday 12/13: We are going to take today to process the information of the past two days and use this as a review day about photosynthesis. Friday 12/14: We are going to have a quiz covering the process of photosynthesis .This quiz is difficult due to the fact that photosynthesis is a very complicated process. Students should also anticipate a test on the Thursday or Friday before break. If the students will not be present on this day, they need to communicate with me about scheduling a time before break to take this test. I hope that everyone is able to enjoy this beautiful weather - I am not convinced it is December! Monday 11/26: Thanks to Jackie T. from 5th hour… Today we finished the lab from last week about Mitosis. We learned about the different stages of mitosis, which are Prophase, Metaphase, Anaphase, and Telophase. In the lab we saw what they look like in a cell. Afterward, we began the "Time For Mitosis" packet which we went on the website http://www.biology.arizona.edu/cell_bio/activities/cell_cycle?cell_cycle.html in order to complete. In this packet we learned that Interphase requires the longest time for completion, and Prophase requires the longest time for completion in Mitosis. The homework is to complete the packet if you didn't finish in class, and to study for the quiz tomorrow. Tuesday 11/27: According to Christina T from 5th hour… On Tuesday, 11/27/12, we had a mitosis quiz. First, we handed in our packets. The Mitosis Packet and the Time for Mitosis Packet. Then, we took the quiz. We had to take two parts to this quiz, the written multiple choice portion and the viewing under the microscope portion. In the microscope part of the quiz we looked under a microscope seeing various cells in different stages of mitosis and answered questions about it. After the real mitosis quiz, we took the district assessment quiz which was 20 multiple choice questions about cells in general. We had no homework! Wednesday 11/28: Today the students had the period to research and become an expert on one topic involving enzymes. They used multiple text books and the internet to find out information about chemical reactions and energy, enzymes and their substrates and factors that affect enzymes. Their homework was to finish any of their topic that they had not completed. Thursday 11/29: Today the students were grouped so that there was one “expert” from each topic and the experts taught the other students about that part of enzymes. The students did a good job of explaining material and some even got creative trying to compare enzymes to a bit Mario Kart metaphor! Friday 11/30: Since I had not taught the students enzymes but they rather learned them on their own, I started today’s class as an open forum for questions and I was happy to explain anything that students still felt fuzzy on. Then the students took a formative assessment on enzymes which they could use their notes on. This was a way for both the students and I to see if they understood enzymes and where any gaps in knowledge existed. After the assessment, students were able to start reading answering prelab questions. The homework was to watch a prelab video and answer a survey which can be found on the website. What to watch for....Monday 12/3:
Today we are going to be completing a lab that looks at what types of fruit juices have enzymes, how heat affects enzymes and how pH levels affect enzymes. The students will each be conducting different components of the experiment and then we will compile the data together. Tuesday 12/4: Unfortunately I have to attend an IHSA meeting for speech because we are hosting the regional tournament this year so the students will have a sub. Today they will see which set of test tubes still had working enzymes and which ones allowed the gelatin to gel. Once they have collected the data they will have the period to write up the lab. This should be a more formal lab report that is typed. We will discuss the write up on Monday. Wednesday 12/5: Today we will take some time to review enzymes and then take the 20 question enzyme quiz. After this, we will talk about the structure of a leaf in preparation for a lab tomorrow. Thursday 12/6: Today we will run a chromatography lab where the students will separate the pigments in a spinach leaf. While the pigments are separating we will also do a second lab where the students examine leaf structure underneath a microscope. Friday 12/7: After going over any questions concerning the lab, we will use today to talk about the light reactions of photosynthesis. Early next week (Tuesday or Wednesday) the students should expect a quiz on photosynthesis. Monday 11/19 Today the students had some time to work on the questions from the cell size lab. They needed to share data with their lab groups and construct four different line graphs. Tuesday 11/20 Thanks to Corey S from 6th period… Today we had a quiz on the lab about cell size in relation to diffusion we did on Friday, and then we went over some notes about the cell cycle that Mrs. Giegler has on a powerpoint. The most important thing I learned was that the centromere holds two sister chromatids together. The coolest part of class today was getting to use our lab packets while we took the quiz! The only homework we had today was to read the packet on cancer Mrs. Giegler gave us and highlight the things we found interesting. A good test question I could ask from today is: What are the names of the 3 phases of interphase? Wednesday 11/21 According to Natasha T from 5th hour On the twenty-first of November, we continued notes from the previous day about the cell cycle. We learned that in Metaphase, the spindle fibers from the centrioles of the cell attach to the chromosomes, which line up in the 'middle' of the cell. The nucleus completely disappears. Then the cell moves onto anaphase, in which the spindle fibers pull chromosomes apart and drag them to opposing poles of the cell. The cell reaches telephase, where the chromosomes are on opposite ends of the cell and the membrane pinches inward, creating a cleavage furrow. In this phase, the nuclear membrane also reforms, (along with the nucleolus) DNA unwinds, and the spindle fibers break apart. This ends Mitosis. After this, Cytokinesis occurs, and the cytoplasm splits, creating 2 new cells. Mitosis and cytokinesis together create the M phase of the cell cycle. We also learned a bit about Plant cell division- it is similar except for the lack of centrioles, which form from the centrosomes. In Cytokinesis, a cell plate forms in the center of the dividing cell, and grows in either direction, splitting the plant cell. We also did a lab, by looking at a 'frozen' onion root tip. We had to search for all phases of the cell. I think this was the coolest part of class, because my partner and I saw most of the phases. Anaphase looked really interesting because we actually saw the spindle fibers pull the chromosomes apart. For homework we had to color code the cell cycle, which was pretty entertaining. Thursday 11/22
Happy Thanksgiving! I hope that everyone was able to spend some time with loved ones and eat lots of tasty food J Friday 11/23 Personally my mother and I enjoyed some fun black Friday shopping – if you were out there, I hope you got all of the deals you were searching for! Monday 11/26 Today we are going to break the day into two halves. The first half of the day will be devoted to a lab where the students will be determining the time that a cell spends in each stage of mitosis. To accomplish this, we will be taking a look at the following website: Then we will finish the second half of the day by reviewing for our quiz tomorrow. To do this students will be completing a word sort with pictures of each stage. Students should anticipate finishing any questions they did not complete from the first half of the day and spending some time reviewing the different stages of the cell cycle for homework. Tuesday 11/27 Today we are going to take our quiz on the cell cycle. There are 25 multiple choice questions and then some identification questions where students will be viewing the different stages under the microscope. Wednesday 11/28 Today we will spend some time going over the quiz and then the students will begin to read about enzymes and their role. Their homework will be to complete some prelab questions. Thursday 11/29 Today we are going to be starting a lab that will help the students learn about the role of enzymes and how they work. Friday 11/30 Today we will finish the pineapple enzyme lab. Students should complete any questions they do not have finished for homework. Monday 11/12 Happy Veteran’s Day! Tuesday 11/13: Reina N from 5th hour says.. Today we spent time reviewing for tomorrow's test. We covered Thursday's pop quiz to see what we needed to know from all the different lab.We also used butcher paper to write what we knew on the different things that would be on the test. In addition, we did "If I were writing the test..." so the students would know what to review for the test. You can see pictures of the posters on the Cells Unit page. Wednesday 11/14 According to Natalie O. from 5th hour.. Today in class we had a test on everything from organelles, cell theory, diffusion, and lab review. Questions 13 and 17 were taken out of your final score, so if you got them right, you got extra credit. You also got extra credit if you participated in writing either a question or answer for your version of the test on the bio blog. There was no homework, but get ready for the next section of biology, which is cell cycle. Thursday 11/15 This in from Tom P. in 6th hour… Today in class we did our test reflections and revisions and we started on our homework, the online Cell Cycle game. Something that I learned today while reflecting upon my test was that facilitated diffusion does not require energy and it moves down the concentration gradient. The coolest part of class today was that the whole period was low-key and relaxed, which I liked. The homework for tonight was to complete the Cell Cycle online game and the question sheet. A great test question would be what is the first stage of cell division? Give the name and what happens. Friday 11/16 Today we quickly went over the cell cycle online game to make sure that students had picked up on some of the major ideas. Then we completed a lab where the students were experimenting to see if they could determine why cells are so small. Student placed different sized cubes of agar (a jello like substance) into acid and watched to see how long it took for the “cells” to completely change color. Homework was to read about mitosis and complete questions based on the reading. What to look forMonday 11/19
Today we are going to start the day by finishing up the analysis questions from the lab. When students have had ample amount of time to answer the questions and construct graphs, we will go over the key points and ideas. Then we will head into a discussion about the cell cycle and the stages of mitosis. Homework tonight will be to color in diagrams of these stages and finish any questions that are remaining in the lab. Tuesday 11/20 This is a late start day so we will have shortened periods. We will begin with a lab quiz that covers the information from the lab on Friday. Then students will have an opportunity to identify the different stages of mitosis in plant cells by looking at an onion root tip. Wednesday 11/21 We will continue to look at the onion root tip cells but today, once the students are comfortable identifying the different stages of mitosis, the students will be tasked with trying to determine how long the cell stays in each stage. To do this, students will be counting how many cells are in each stage in their field of view and use these percentages to determine how long each stage takes. The homework over the break will be to complete the lab and create a one page note sheet that diagrams all of the important information about the cell cycle. We will be having a quiz on this information when we get back from Thanksgiving and I want to encourage the students to think about the cell cycle over the Thanksgiving break! Thursday 11/22 HAPPY THANKSGIVING!! I hope that everyone has an opportunity to spend time with family and remembering what blessings we all have in our life. Friday 11/23 Happy Shopping! I hope everyone is able to get their Black Friday deals :) If I were to write the test....These are the questions that I would ask...
Topics: - Cell Theory - Cell Organelles - Cell Membrane Parts - Plant cells vs. Animal cells - Prokaryotic cells vs. Eukaryotic cells - Passive Transport -Hypertonic Solutions -Hypotonic Solutions -Isotonic Solutions -Active Transport Directions: You will recieve a 1/2 point of extra credit if you post a question. You will recieve a 1/2 point of extra credit if you answer a question that is NOT your own. You must sign each post with your first name and last initial and you must include your class period! What happened last week?Happy Veteran’s day to everyone! Thank you to all veterans who have served our country and fought for our freedom. It is a blessing to our country that you were willing to sacrifice so much for the good of our country! Here is what we have been up to in Biology this week: Monday 11/5 Thanks to Grace L from 5th hour… Today in class we did two labs. We started a new lab with dialysis tubes. We used the tubes and put glucose/starch/protein solution in them. We ran a Benedict, Biuret, and iodine test to see if the solution passed through the tube and which biomolecules were present. We also did another part of our egg lab. The most important thing we learned was seeing visually how diffusion and osmosis work in a cell.The coolest part of class was seeing the color changes with the different tests we ran for the dialysis tube lab. Also, seeing what the egg looked like after sitting in Karo Syrup. Our homework is to finish the lab questions of the D.T.L. Also, you have to watch a video (under our cell unit page on Mrs. Giegler's website) and complete a survey with it. According to Brian L from 6th hour… We kept working on the egg lab. We also set up the dialysis tube lab and tested for monosaccharides, proteins and starches that leaked out of the bag. We added iodine at the end to test for starch. The most important thing I learned is that most membranes are semi- permeable and particles that are small enough can pass through. The coolest part of class was looking at the egg. The homework was to watch the cell membrane videos online and fill out the survey. You also need to finish the questions from the dialysis tube lab. A good test question would be “What is the difference between osmosis and diffusion?” Tuesday 11/6: Today we checked on the eggs one last time after they had been sitting overnight in water. The students should have seen that the egg got larger due to water entering back into the egg. Then we finished talking about the notes on diffusion and osmosis. These notes will be posted shortly online. The homework for the night was to finish the egg lab questions and work on a packet with excellent question about passive and active transport. Wednesday 11/7: The students were very excited today to hear that the test was being postponed to next Wednesday! We spent the day going over the packet of questions on passive and active transport and then completed a short lab where the students viewed normal red onion cells. Then we added salt water to the cells, looked at them and then flooded them with DI water. In the below video you can see what the students saw – you should ask them to explain what is happening and why! The homework was to finish the summary questions from the lab. Thursday 11/8: This just in from Nathan N from 6th hour… On Thursday November 8 we took a pop quiz, finished watching the BBC video, and reviewed for the test. The pop quiz was for us to figure out how much we know about organelles and what we need to study. A cool part of the BBC video was that our white blood cells eat up the virus so we do not get sick. Thanks Nathan! The students were given their review packet to work on over the weekend. Friday 11/9: Today was an institute day so students did not have to come to school :) I hope they enjoyed the day off! What to look for...Monday 11/12:
No School – Thank a veteran for their service! Tuesday 11/13: Today we are going to spend some time reviewing. We will go over the pop quiz from Thursday to go over the information and use that as a way to make sure that the students understand all of the labs from last week. Then we will do an activity to help us review by using butcher paper to write all of the information we know about different topics and any questions that the students still have. We will also use the time for each student to play “If I were writing the test…” Wednesday 11/14: We will take the test covering the cell and the cell processes on this day. The students will need to review information about the cell organelles, the cell theory, diffusion & osmosis, the different types of solutions and their effect on a cell and the parts of a cell membrane. Thursday 11/15: Today we will spend some time reflecting on the test that we took Wednesday and start our next unit with a reading on mitosis. Friday 11/16: The rough plan for today will be to complete an internet activity where the students will be learning about the stages of the cell cycle as they try to control the division of the cell. I will try to update more details later in the week. Congrats to 5th hour Cytoskeleton and 6th hour Chloroplasts! In what was a well fought campaign these two organelles came out on top with the most votes. They have won themselves a one year term of "Most Important Organelle." Oh my goodness, with grades and our awesome project in this class I am so sorry that I ran out of time to get the blog up to date. If your students didn’t tell you, we had some of the organelles in the campaign get on Twitter to converse back and forth with each other. These organelle conversations were seen by Biologists in France and England and the scientists were so excited that they got started in on the tweets. Much of the conversation can be seen at #organellewars. One of the scientists blogged about it, another talked about the project on BBC radio and a third got us a copy of the BBC cell special that was shown in Europe. It is crazy how small our world is with the technology we have! Link to the Blog: http://www.plantcellbiology.com/2012/10/the-organelle-presidential-campaign-2012/ Link to the BBC Radio Segment: (Discussions about our project begins at about 6:10 mark) http://drmolecule.org/2012/10/23/organellewars-a-fun-school-project-in-cell-biology/ As for what happened in the last two weeks let’s check in with our guest authors! Monday 10/22/12: Megan B from 5th hour says… Today we spent the whole period working on campaigning for our Organelle Wars. We each were assigned a specific organelle from a wide variety of organelles, such as the cytoskeleton, ribosomes, cell wall, lysosomes, and junctions. Each group is supposed to provide enough information for the students to fully understand the functions of their organelle. Along with that, they are supposed to create a "smear" poster to smear other organelles, proving that their specific cell is the best out of all. That also means that groups are supposed to have enough knowledge on their organelle, that they can successfully deflect any smears that come their way. There was not any assigned homework, just to work on the project. Tuesday 10/23/12: From James F in 6th hour… Today, we did a lab covering the difference between plant and animal cells. For the animal cells, we used our very own cheek cells! As for the plant cells, we created a wet mount of an elodea leaf. We each received a packet to draw and fill out the information we figured out. This included drawing and labeling each cell. Actually looking at both cells in real life really helped me learn some differences between plant and animal cells. Seeing the difference in shape was really cool! Our homework was to finish the lab. Also included in the lab was a page dealing with the diameters of the field of views. Test Question: Label different parts of plant and animal cells from looking at pictures of plant and animal cells (cell membrane, cell wall, chloroplasts, cytoplasm, nucleus). Wednesday 10/24/12: According to Bobby in 5th hour… We took pop quiz on the organelles and their functions and went through and fixed it. We also labeled a diagram of a cell and corrected it. The most important thing that we learned was the locations of all the organelles in the cell. The coolest thing we learned was the locations of our organelles inside the cell. Our homework was a worksheet where we had organelles and we had to write their function, whether or not they are prokaryotic animal or plant cells. Thursday 10/25/12: Thanks to Tiffany from 5th hour… The Organelle campaign is still going and every wall is filled with various organelle smears and posters. Don't forget that the speeches are on Monday and Tuesday of next week! Today Mr. Graba subbed for the class. We saw the video on cells, organelles and viruses. It starts off with a few general descriptions of organelles and their functions. FUN FACT: Did you know, every cell has 6ft of DNA?!? Then a virus attacks the cell. A cell has many defenses against viruses. The first obstacle are the white blood cells and their antibodies. If the virus makes it past, it still has to face the cell membrane and numerous other organelles in the cytoplasm to reach the nuclear membrane. A virus's ultimate goal is to get into the nucleus and make copies of it's own DNA and multiply. Today's test question is... What is the function of ribosomes, and in what types of cells are they found in (Prokaryotic, Plant, animal)? The homework is to finish the Organelle worksheet given on Wednesday. Organelle speeches are on Monday and Tuesday. GO MITOCHONDRIA!! Power house of the cell! (&) <-- Mitochondria ^.^ Friday 10/26/12: Just in from Lauren G in 5th hour… Today in class, we started off by handing in our cell video sheets. We started this video on Thursday and we will complete it next Wednesday. Next, Mrs.Giegler checked to see if our organelle function sheet was completed. Then, we were given The Cell Theory worksheet. We worked on this worksheet in class, highlighting important facts and answering questions on the history of the microscope and cell theory. We also discussed our organelle project. You should be able to present your speech on Monday, October 29th and have all your campaign promoters in your manilla folder. At the end of class, we played an organelle review game. We will be having a test on organelles and cell theory on Wednesday, October 31st. Test qustion: Name all the organelles that are present in prokaryotic cells. Monday 10/29/12:1st quarter ended on Friday so we took some time and went over grades. Then it was time to start the presentations. I never thought I would sit in a high school class where the students started to get sick of cupcakes but many of the organelles knew that the way to the voters heart was through their stomach! According to Emily H from 5th hour... Today in class we started out by having 5 minutes to regroup with out organelle war partners on our projects. Then we started with the presentations. The presentations that went were the nucleus (Lauren and Natasha), the golgi body (Ken and Andrij), the Chloroplasts (Grace and Emily), and the cell membrane (Lucas and Bruce). Here were the main focuses on each presentation: The nucleus- Nucleus is the control center and has instructions for organinsms to live. The golgi body- The golgi body is the USPS for cells and contains cataclysts. The Chloroplasts- This is where the process of photosynthesis takes place. The Cell Membrane- Prevents infections from entering our cells and is the barrier from the outside world. The most interesting part of class was seeing who came up with creative ways to campaign for their organelle. The homework was study for the quiz on wednesday. You could do this by studying the review game packet and the review we eventually got on tuesday. A test question from today could be: Q:Are Golgi Bodies found in prokaryotic cells? A: No, only in eukaryotic cells. (Plant and Animal Cells) According to Christine H from 6th hour... we officially started our Most Important Organelle campaign! After two weeks of research and preparations we were finally able to see our classmates presentations and the battle began. We learned about organelles such as lysosomes, the endoplasmic recticulum,and ribosomes. We received great information from each of the contestants and some of them even gave incentives to vote for them! Tuesday 10/30/12: Today we continued with the presentations. Students were all very well prepared and excited to have to opportunity to campaign for their organelle! Wednesday 10/31/12: This just in from Pranathi K. from 6th hour... On Halloween we took our quiz on organelles. We also had to take an egg and measure its mass. We had to record the mass in our science notebooks or anywhere it wont get lost. After that we measured 150mL of vinegar and put the egg in it. Lastly we wrote down our observations and fit in a presentation of the organelle campaign. We did not have any homework, but we are voting for the best organelle tomorrow! Thursday 11/1/12: Imama K from 6th hour says... Today in class, we all put in our votes for the organelle wars election (chloroplast won first place) and cleaned out our flyers. If you weren't there, make sure to take down all of your flyers because Mrs. Giegler is subtracting one point each flyer she finds lying around from your quiz score. (Mrs G here...I think that this should be the case for the real politic election too! Instead of votes, fines for any signs still littering street corners!) We also got our cell quizzes back. Afterwards, we took notes on solutes/solvents, and the definitions of terms such as permeable, impermeable, semipermeable, etc. The most important thing we learned were the definitions for the cell membrane. The coolest part of class was the election! There was no homework. A test question that could be asked from today: Why must a cell membrane be selective? (Answer: to maintain homeostasis, let in only necessary molecules, and to remove waste.) Friday 11/2/12: Andrij K from 5th hour tells us... First, we finished part 2 in the egg cell experiment by washing the egg, weighing it, and recording the difference. Then we finished our notes on permeable, semipermeable, and impermeable membranes and diffusion. The most important thing I learned was that diffusion occurs naturally and doesn't take any energy. This was demonstrated by the inverted erlenmeyer flask experiment and the semipermeable membrane.The coolest part of class was when you sprayed the perfume in the air and we watched it diffuse and saturate the whole class.We didn't have any homework over the weekend.What do ribosomes do? (make proteins for the cell) and Zach K from 6th adds... Today in class we took notes about diffusion, did a demo that created a pink lava lamp effect, and did part of our egg experiment. Diffusion is when particles move from a high concentration to a low concentration. During the demo two beakers were put together one if the has ammonia and when the membranes collided a hot pink liquid was made. During the egg experiment we took the eggs out of the vinegar and put them into karo oil. It's very sticky! The most important thing we learned during class was diffusion and the coolest part was seeing the egg after we took it out of the vinegar. Their was no homework. Thanks to everyone for such great summaries! What to look for...Monday 11/5/12:
Today we are going to take a look at our eggs, take their mass and the volume of the karo syrup and then put them in DeIonized water for the night. We are going to do a second lab where we will be seeing what molecules move through a semi permeable membrane called dialysis tubing. The students will have to recall what the indicators Benedict's Biurets and Iodine tell us! Students should be finishing up the questions to the dialysis tube lab and watch a video about the cell membrane which will be posted on the Cell Unit Page of this website. Tuesday 11/6/12: Today we will finish the egg lab and see what the DI water did to it. Then we will finish up some notes about hypotonic, hypertonic and isotonic solutions and active transport. I will also go over any questions that students have about the cell membrane. If we have time today, we will take a look at some onion cells that have been soaking in salt water to see plasmolysis. The homework will be to finish the egg lab and start reviewing for the test. Wednesday 11/7/12: Today we are going to review. Students will try to recall all of the information they can about different topics and we will go over any questions that students have. Thursday 11/8/12: We will take our Cell & Cell Transport test today. It will cover all of the information about the organelles, cell theory and diffusion and active transport. Friday 11/9/12: Institute Day - Enjoy the day off! :) |
AuthorThe world around us is an amazing place that functions in beautiful harmony & I get to teach young minds all about it! Archives
December 2018
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