exam1-key

exam1-key - Name _KEY_ BISC 104 Exam I (total 100 points, 6...

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1 Name ________KEY________________ BISC 104 Exam I (total 100 points, 6 pages ), 1-1:50 P.M., September 24, 2007 Please circle the initials of your TA: A d S S Y N Z F Section I. Multiple-Choice (Total 30 points , each correct answer is worth 2 points ). CIRCLE the one best answer for each question. 1. Which of the following federal agencies approves and regulates new drugs for marketing in the US? a) Congress b) NIH c) USDA d) FDA e) Centers for disease control and prevention (CDC) 2. Enzymes are polymers of a) amino acids b) fatty acids c) monosaccharides d) RNA e) DNA 3. Male sterility resulting from sperm motility impairment could be attributed to a defect in the sperm’s ____________. a) nucleus b) Golgi apparatus c) microtubules d) actin filaments e) ribosomes 4. Contraction of skeletal muscle is triggered by the release of ______________ ions from the sarcoplasmic reticulum. a) Na + b ) K + c) Cl - d ) M g 2+ e) Ca 2+ 5. The ideal solution for pepsin (an enzyme found in the stomach) to function has a pH _______ , and the solution is ________________. a) 2; basic b) 2; acidic c) 9; basic d) 7; acidic e) 7; neutral 6. Na + ions move from the inside to the outside of a neuron via a) simple diffusion through Na + channels b) simple diffusion through the lipid bilayer c) active transport, which does not require ATPs d) active transport, which requires ATPs e) none of the above 7. The ability to maintain a stable internal environment is called a) equilibrium b) osmosis c) transcription d) metabolism e) homeostasis
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2 Name ________________________ 8. C 14 is an isotope of the most prevalent form of carbon, C 12 (atomic number 6). Each C 14 atom contains _________ protons and _____ neutrons. a) 7; 7 b) 14; 12 c) 6; 8 d) 8; 6 e) 6; 6 9. A strategy to treat osteoporosis is to block the activity of a) osteoblasts b) osteoclasts c) osteocytes d) chondroblasts e) chondrocytes 10. Which is the best description of a “double-blind” test? a) Neither the experimenter nor the subject knows whether the subject is receiving the real treatment or the placebo b) Only the subject does not know whether they are receiving the real treatment or the placebo c) Both the experimenter and the subject believe the subject is receiving the placebo d) Both the experimenter and the subject believe the subject is receiving the real treatment, but they are wrong. e) None of the above 11. ATP molecules in the skeletal muscle can be renewed by an energy reserve called a) actin b) troponin c) tropomyosin d) reservin e) creatine phosphate 12. Which of the following secreted by adipocytes in the adipose tissue can suppress appetite? a) myostatin
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This note was uploaded on 07/25/2010 for the course BISC 104LXG taught by Professor Ko during the Fall '08 term at USC.

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exam1-key - Name _KEY_ BISC 104 Exam I (total 100 points, 6...

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