classwork/Homework
Monday IB Biology - Today I only saw period 1, so we have two different things that need to happen depending on your class. IF you are in period 1, tomorrow we will start to look at your next formal lab on chromatography. Please bring your last formal lab, in any format, so we can see what we can improve upon this next lab, and you should also have some ideas about what you would like to do with your latest research. If you haven't been keeping up, here are some websites that will help you: https://www.chemguide.co.uk/analysis/chromatography/paper.html https://www.explainthatstuff.com/chromatography.html Plus, don't forget that your homework from last week was about finding out how chromatography is used in real life. Look back if you don't remember as you will need to have a real reason for the research you conduct. If you are in period 2, you will be completing the second part of your exam tomorrow and then working on your next formal lab, like period 1, so read the earlier description after preparing for the exam. Honors Biology - Today we looked at your genetic disorder homework, and then started the first part of your next formal lab. Here are the instructions from what we did today: 1. Place 2 ml of the 3% hydrogen peroxide solution into a clean test tube. 2. Using forceps and scissors cut a small piece of liver and add it to the test tube. Push it into the hydrogen peroxide with a stirring rod. Observe the bubbles. What gas is being released? (consider the equation) ______________________ Throughout this investigation you will estimate the rate of the reaction (how rapidly the solution bubbles) on a scale of 0-5 (0=no reaction, 1=slow, ..... 5= very fast). This is very subjective, but assume that the reaction in step 2 proceeded at a rate of "4" Recall that a reaction that absorbs heat is endothermic; a reaction that gives off heat is exothermic. This is now our control, or baseline data for comparisons. 3. Now, feel the temperature of the test tube with your hand. Has it gotten warmer or colder ___________ Is the reaction endothermic or exothermic? ___________ 4. Pour off the liquid into a second test tube. Assuming the reaction is complete. What is this liquid composed of (consider the equation again)? _______ 5. What do you think would happen if you added more liver to the liquid in the second test tube? _____ Test this and record the reaction rate. Reaction Rate ___________ (0 – 5) 6. Add another 2 ml of hydrogen peroxide to the liver remaining in the first test tube. What is the reaction rate? ________ 7. Now that you have completed your test, Is catalase reusable? Explain how you know. You will now test for the presence of catalase in tissues other than liver.
2) An idea of what kinds of environmental change you would like to investigate with enzyme function. (pH, hot temperatures, cold temperatures, UV exposure, altitude, hydration, etc.) 3) Using your lab write-up guidelines create your research aim, write your background information (on enzymes, why you want to investigate what you do, how is it like real life, etc.), and a hypothesis with an explanation. 4) You should also know how to measure changes in enzyme activity. (Just like the liver test maybe?) If you come unprepared, you will not be working with your lab group. Tuesday IB Biology - The SDSUS School of Nursing Sign Up on November 2oth is now open to sign ups. Today our main goal was for you to understand chromatography and its many applications. We then looked at possible avenues for research (and there's a lot)! When I see you next, I need you to be prepared with a research aim that you collaboratively work out with your partner (if you have one). We will next review our old lab reports on enzymes to improve on our experimentation and then commence our research. Here's the interesting professional website I found on chromatography: https://www.chromatographytoday.com/news/gc-mdgc/32/breaking-news/chromatography-is-a-breath-of-fresh-air-for-drug-testing/34018 Honors Biology - See the instructions posted from yesterday. ** If you are really interested in genetics (the topic we are studying), please check out this article. If you are REALLY into this science, tell me in detail how this condition is like and not like DMD and I'll give you extra credit. If it isn't detailed (evident that you read and understand), no credit for you. https://www.nytimes.com/2019/11/04/health/alzheimers-treatment-genetics.html?auth=login-email&login=email&utm_source=Global+Health+NOW+Main+List&utm_campaign=999059a655-EMAIL_CAMPAIGN_2019_11_04_07_11&utm_medium=email&utm_term=0_8d0d062dbd-999059a655-2841569 Wednesday IB Biology - You job is to make sure that you have a properly developed lab procedure. If you signed up for the field trip on the 20th for SDSU Nursing, please either pick up your permission slip, or return the slip to me. Honors Biology - The only thing that you need to do is to get your lab planned out with your partner. So, this means that you should have pretty clean rough drafts of the Title Page and Design sections of the lab and all of the sub components. Do NOT come in unprepared! Thursday IB Biology - Today we worked really hard to make sure that we have our lab lined up and ready to go for Friday/Tuesday. If you are not familiar with how the experiment can be fully executed, please be sure to review the previous websites that will tell you in detail how this happens. IN fact, if you don't "get it", you can't write good procedures. You should have what you need, as well as a detail procedure. While you are getting work done, consider this program. It is NOT cheap, but I think it doesn't hurt to offer it here. Sometimes these programs have scholarships too. See the flyer I've attached below for more information. My name is Nicole Givenrod and I am the Program Director for the UC Irvine Health Department of Urology’s Summer Surgery Program. I’m excited to share that applications for the 2020 Summer Surgery Program are now available! The program offers 2 session each lasting 2 weeks each. Session I: July 6, 2020 – July 17, 2020 and Second Session II: July 20, 2020 – July 31, 2020. Applications are accepted until the program is full and we do offer scholarships. Please be advised the scholarship applications are due by April 1, 2020. I was hoping you could pass the information on your students. I have attached a flyer with details regarding the program and the link for the Summer Surgery Program below. If you or any of your students have any questions please feel free to email or call me. http://www.urology.uci.edu/education_summersurgery.shtml Thank you in advance for your willingness to send this out! Sincerely, Nicole Givenrod | Summer Surgery Program Director Department of Urology | UC Irvine Health 333 City Blvd. West, Suite 2100, Orange, CA 92868 Office: 714.456.6047 | Fax: 1.888.378.4358 [email protected] Honors Biology - YOu should be ready to experiment on Tuesday, but that's because we will make sure your lab is cleaned up tomorrow and that you have all of your equipment. Please be ready with a CLEAN rough draft of your research. Friday IB Biology - Hey, please help out David Parra with his EE research and fill out the simple survey so he can collect data. You all know how important data is to much of the work you do. LInk: https://docs.google.com/forms/d/e/1FAIpQLSfYEpJ2QtUIZfwkEV96X0TVYDoTLw70gDR5UCFd2MSqU6dB8w/viewform?usp=sf_link In addition to David's survey, please be sure to be ready for experimentation first thing on Tuesday. Remember that each day next week we will be an introduction to the genetics we need to cover as well. Honors Biology - Today we focused on a number of things that are fine points to consider while developing your final lab procedures. 1) Use the term "denature" to indicate change in the enzyme, 2) Catalase is the name of the enzyme you are working with. 3) Be sure that you are specific in your amounts. 4) Make sure the amounts you have selected easily fit into a test tube. 5) YOu actually know what you are doing. 6) When this is all done, you should have a picture or illustration of your procedures and set up. This can be done now with an illustration, or you can take pictures to use when you produce your final lab report. When you come back on Tuesday, please understand that the expectation is that you have clear direction and can begin working. I will be out of town most of this weekend so I may not be available for questions.
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