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Exam22008-ANS-2 - Payne BSCI 330 Exam#2 Print Your Name...

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Payne, BSCI 330 Exam #2 3/28/08 Print Your Name: Your Laboratory Section: DAY TIME Directions : 1. Print Your Name and Section on every page of this exam NOW . 2. Use a PEN to complete this exam or you will not be eligible for a regrade. 3. Check to see that you have 5 pages . If you don t, raise your hand. 4. You must confine your answers to the spaces provided. 5. Read the questions! - Be as specific and as concise as you can. Use the minimal number of words necessary to completely answer the question. Use diagrams and graphs if needed, but remember to label them! 6. You must hand in your exam by 10:50 AM. Good Luck. Scoring : Possible Pts. PAGE 2 / 24 PAGE 3 / 18 PAGE 4 / 28 PAGE 5 / 30 TOTAL = / 100 I pledge on my honor that I have not given or received any unauthorized assistance on this examination Signed 1
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1) In addition to pyruvate, name TWO other “high energy” compounds that are produced by glycolysis and can be used by the cell to do work or provide energy for other reactions? (4 pts) _________ NADH ____________________ __ ATP ___________________________ 2) What acid is the product of anaerobic respiration in animal cells (i.e. not yeast!)? (2pts) __________LACTIC ACID OR LACTRATE______________________ 3) Describe THREE general functions of biological membranes (6 pts). ______________________________ ___________________________ ______________________ 1. Compartmentalization 2. Scaffold for Biochemical Activities : 3. Provide a Selectively Permeable Barrier 4 4. Transporting Solutes 5 5. Responding to External Signals : 6. Intercellular Communication : 7. Energy Transduction : 4a) What does it mean to say that a phospholipid is “unsaturated”? (2pts) It has double bonds (1 pt) in its hydrocarbon tail (1pt) 4b) Does membrane fluidity increase or decrease with lipid saturation? (2pts) decreases 5) Name TWO lipid (i.e. non-protein) components of cell membranes that are NOT phospholipids.
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