2009Bio3058final(2).pdf - STEIN FINAL EXAM BIOLOGY 3058 MAY...

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STEIN FINAL EXAM -- BIOLOGY 3058 -- MAY 1, 2009 -- PAGE 1 of 16 STEIN FINAL EXAM -- BIOLOGY 3058 -- MAY 1, 2009 -- PAGE 1 of 16 There are 50 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 50 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 serves as a sensor, or as part of a sensor, that functions in a negative feedback system? A. Central thermoreceptor neurons whose peripheral terminals are located in the skin. B. Plasma-membrane Calcium Receptors located in the plasma membrane of Parathyroid Gland cells. C. Carotid artery baroreceptor neurons whose peripheral terminals are located in the walls of the carotid artery. 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? A. Action potentials in the fibers of the diaphragm muscle. B. Action potentials in parasympathetic neurons that release acetylcholine (ACh) as their neurotransmitter and synapse upon skeletal muscles surrounding the arterioles. C. Action potentials in peripheral hydrogen-ion-sensitive chemoreceptor neurons that release glutamate as their neurotransmitter from their central terminals located in the brain stem. D. A and B. E. A and C. F. B and C. G. A, B, and C. H. None of the above.
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STEIN FINAL EXAM -- BIOLOGY 3058 -- MAY 1, 2009 -- PAGE 2 of 16 STEIN FINAL EXAM -- BIOLOGY 3058 -- MAY 1, 2009 -- PAGE 2 of 16 3. Which of the following serves as an effector, or as part of an effector, that functions in a negative feedback system? A. Muscarinic Acetylcholine Receptors (mAChRs) in the SA node cells of the heart. B. Nicotinic Acetylcholine Receptors (nAChRs) in skeletal muscle fibers located in the alveoli of the lung. C. Glycogen Receptors in the plasma membranes of liver cells. D. A and B. E. A and C. F. B and C. G. A, B, and C. H. None of the above. 4. Which of the following serves as a controlled variable in a negative feedback system? A. Levels of hydrogen ions in the interstitial spaces of the brainstem. B. Blood plasma levels of calcium.
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