2012Bio3058exam1 - STEIN IN-TERM EXAM BIOLOGY 3058 PAGE 1...

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STEIN IN-TERM EXAM -- BIOLOGY 3058 -- FEBRUARY 16, 2012 -- PAGE 1 of 8 STEIN IN-TERM EXAM -- BIOLOGY 3058 -- FEBRUARY 16, 2012 -- PAGE 1 of 8 There are 25 questions in this Biology 3058 exam. All questions are "A, B, C, D, E, F, G, H" questions worth one point each. There is a total of 25 points in this exam. Fill in your answers on the separate answer sheet . The format for this exam is: Fill in A if A is the only correct answer. Fill in B if B is the only correct answer. Fill in C if C is the only correct answer. Fill in D if both A and B are correct (and C is NOT correct). Fill in E if both A and C are correct (and B is NOT correct). Fill in F if both B and C are correct (and A is NOT correct). Fill in G if A and B and C are all correct. Fill in H if none of the above is correct (A is NOT correct, B is NOT correct, and C is NOT correct). ONLY MARK ONE LETTER PER QUESTION. You may keep the question sheets. Use a dark (black or blue) pencil or dark (black or blue) pen to fill in the answers. DO NOT USE A RED PEN; DO NOT USE A RED PENCIL. 1. Which of the following is true? A. CaSRs (Calcium-Sensing Receptors) are GPCRs (G-Protein Coupled Receptors) that are spanning proteins located only in the membranes of the nucleus of Parathyroid Gland cells. B. Calcium ions are antagonists of the binding site of CaSRs. C. CaSRs serve as sensors in a negative feedback control system that regulates the blood plasma levels of Calcium. D. A and B. E. A and C. F. B and C. G. A, B, and C. H. None of the above. 2. Which of the following serves as an actuating signal, or as part of an actuating signal, in a negative feedback system? 3. Which of the following serves as an effector, or part of an effector, that functions in a positive feedback system?
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STEIN IN-TERM EXAM -- BIOLOGY 3058 -- FEBRUARY 16, 2012 -- PAGE 2 of 8 STEIN IN-TERM EXAM -- BIOLOGY 3058 -- FEBRUARY 16, 2012 -- PAGE 2 of 8
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