Human_Physiology_Exam_1

Human_Physiology_Exam_1 - Lopez, Raul CLOCK Start 9/6/2007...

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Lopez, Raul CLOCK Start Time 9/6/2007 6:01:12 PM Time Take n 00:52:46 NAVIGATION [2] Q 1 [2] Q 2 [2] Q 3 [2] Q 4 [2] Q 5 [2] Q 6 [2] Q 7 [2] Q 8 [2] Q 9 [2] Q 10 [2] Q 11 [2] Q 12 [2] Q 13 [2] Q 14 [2] Q 15 [2] Q 16 [2] Q 17 [2] Q 18 [2] Q 19 [2] Q 20 [2] Q 21 [2] Q 22 [2] Q 23 [2] Q 24 [2] Q 25 [2] Q 26 [2] Q 27 [2] Q 28 [2] Q 29 [2] Q 30 [2] Q 31 [2] Q 32 [2] Q 33 [2] Q 34 [2] Q 35 [2] Q 36 [2] Q 37 [2] Q 38 [2] Q 39 [2] Q 40 [2] Q 41 [2] Q 42 [2] Q 43 [2] Q 44 [2] Q 45 [2] Q 46 [2] Q 47 [2] Q 48 [2] Q 49 [2] Q 50 TEST INFORMATION Your Score is 60 Out of: 100 Time Allowed: 60 min Total Problems: 50 COLORING LEGEND Not Incorrec Correct
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Answer ed t You scored 60 out of 100 Question 1 Your answer is INCORRECT. 1.Which of the following is a function of the lipid bilayer? a) Serves as a barrier to water soluble substances. b) Serves as the basic structure of the plasma membrane. c) Responsible for the fluidity of the plasma membrane. d) All of these. e) None of these. Question 2 Your answer is CORRECT. 2.The function of the channel proteins is to: a) Provide a conduit through which specific ions can pass through the plasma membrane. b) Enables cells to bind to one another. c) Serve as a catalyst for chemical reactions. d) Is a signaling molecule through which cells communicate with one another. e) Carries polar molecules from one side of the plasma membrane to the other side. Question 3 Your answer is CORRECT. 3. The function of the carrier proteins is: a) Provide a conduit through which specific ions can pass through the plasma membrane. b) Carries polar molecules from one side of the plasma membrane to the other side. c) Act as cellular velcro between cells. d) Serve as a catalyst for chemical reactions at the plasma membrane. e) Serve as the site of initiation for signal transduction pathways.
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Question 4 Your answer is CORRECT. 4. Carrier-mediated transport: a) Involves a specific membrane protein that serves as a carrier molecule. b) Always moves substances against a concentration gradient. c) In some cases may require energy expenditure. d) Both [a] and [c]. e) All of these are correct. Question 5 Your answer is INCORRECT. 5. Facilitated diffusion: a) Involves a carrier molecule. b) Does not require energy expenditure. c) Always moves substances against a concentration gradient. d) Both [a] and [b]. e) Both [a] and [c]. Question 6 Your answer is INCORRECT. 6. If a cell were exposed to an isotonic solution which of the following would occur? a) Water would move into the cell causing the cell to expand in volume. b) Water would move out of the cell causing the cell to shrink in volume. c) The net movement of water would be neither in nor out of the cell. Question 7
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Human_Physiology_Exam_1 - Lopez, Raul CLOCK Start 9/6/2007...

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