Biology Revision Notes Biochemical Tests: Proteins - add biurettes reagent to the sample. If protein is present‚ clear colour change from blue to purple. Reducing Sugars – add Benedict’s reagent to the sample. Heat in Bunsen or water bath. If reducing sugars are present‚ clear colour changes from blue -> orange red precipitate. Lipids – dissolve sample in ethanol. Slowly pour the solution into the water slowly. If lipids are present a white emulation forms on the surface. Starch – add iodine
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C. Diff Clostridium Difficile: bacterium that can cause symptoms ranging from diarrhea to life-threatening inflammation of the colon. Most commonly affects older adults in hospitals or nursing homes and typically occurs after use of antibiotic medications. Recently C. Diff has become more severe and difficult to treat. Healthy people can get C.Diff even if they aren’t taking antibiotic or hospitalized. It is possible to not be sick while having C.Diff but still possible to spread the infection
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enzyme was 15% compared to tube 1. Malonate inhibited 85% of tube 3’s enzymatic activity. One possible explanation is that as a Krebs cycle intermediate‚ it may exert a protective role in minimizing reverse-electron transfer meditated production of superoxide by Complex I (the first step in the electron transport chain) (“Succinate Dehydrogenase‚” 2012). Reference Morgan‚ Judith Giles and Carter‚ M. Eloise Brown. Investigating Biology (Laboratory Manual). 7th ed. 107- 121. 2011. Reece‚ Jane B.‚ Urry
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Chapter 7 Questions: 1. Who is Pammy? How does Gatsby react when he sees her? How does her existence complicate Gatsby’s dream? Pammy is the daughter of Daisy and Tom Buchanan. Gatsby looks at Pammy with surprise when he meets her‚ Tom and Daisy’s daughter. He is hurt that Daisy has moved on in life without him‚ while he remains trapped in the love he has had for her all those years. Pammy is living proof‚ something you cannot undo‚ and that is why it hurts Gatsby. 2. How does Tom suddenly
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CHAPTER 23 Circulation Chapter Objectives Opening Essay Describe the adaptations of giraffes and humans to circulate blood against the pull of gravity. Circulatory Systems 23.1 23.1 23.2 Describe the general functions of a circulatory system. Compare the structures and functions of gastrovascular cavities‚ open circulatory systems‚ and closed circulatory systems. Compare the cardiovascular systems of a fish‚ an amphibian‚ a reptile‚ a bird‚ and a mammal. The Human Cardiovascular System
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z/OS XL C/C++ User’s Guide SC09-4767-06 z/OS XL C/C++ User’s Guide SC09-4767-06 Note! Before using this information and the product it supports‚ be sure to read the information in “Notices” on page 657. Seventh Edition (September 2007) This edition applies to XL C/C++ in Version 1 Release 9 of z/OS (5694-A01) and to all subsequent releases until otherwise indicated in new editions. This edition replaces SC09-4767-05. Make sure that you use the correct edition for the level
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LAB 4: KIRCHHOFF’S RULES DIY Lab This section is adapted from reference 1. Objective In this experiment‚ you will experimentally verify Kirchhoff’s rules by measurement and by mathematical analysis. Apparatus (Lab Kit* or NIC Lab) 5 resistors one 6V battery or power supply (each under 1.5 kΩ each‚ not all equal) digital multimeter 12 connecting wires *If you do not have the Lab Kit‚ you can use equivalent items. Contact your instructor regarding equivalent items to ensure that the objective
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Centre No. Candidate No. Paper Reference(s) Surname Paper Reference Initial(s) 7 0 4 0 7040/01 0 1 Signature Examiner’s use only London Examinations GCE Biology Ordinary Level Paper 1 Monday 10 May 2010 – Morning Time: 1 hour 30 minutes Team Leader’s use only Question Leave Number Blank 1 2 3 4 5 Materials required for examination Nil Items included with question papers Nil 6 7 8 9 Instructions to Candidates In the boxes above‚ write your centre number
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not be receiving the traditional letter grades‚ but instead either a “pass” or a “fail.” Personally‚ I believe that changing the old grading system of “A‚ B‚ C‚ D‚ and F” would be preposterous and completely horrendous. I am outraged at the fact that we would have just a “pass” and “fail” mark. I believe this because students with a “C” average will most likely be considered the same as a student with an “A” average‚ many students will become less motivated to actually put an effort into their
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Learning about Cells. First thing I want to show you is two beautiful pictures of a Cell. Imagine all of this is in something so small we cannot see it with our naked eyes. About 10‚000 average-sized human cells can fit on the head of a pin. There are a few exceptions‚ but the average cell is very tiny. Here are a few beautiful examples of a cell structure to kind of give you an idea of its beauty‚ and how they fit together. Plasma Membrane (cell membrane) First we are going to learn about
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