118exam1-spring07 - BIOLOGY 118 - EXAM 1 April 9, 2007 -...

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BIOLOGY 118 - EXAM 1 April 9, 2007 - VERSION A ..) on your answer sheet. You can keep this list of exam questions. You may write on it if you wish. Marking & keeping this test is the only way you will know the answers on your scantron. Each question has only 1 correct answer. Indicate your choice on the answer sheet - scantron. If you need clarification for a question, raise your hand & stay in your seat. If you are stumped by a question, place a mark by it, and return to it later. ATP = adenosine triphosphate LDL = low density lipoprotein ADP = adenosine diphosphate mRNA = messenger RNA BMI = body mass index O 2 = oxygen centrosome = pair of centrioles RNA = ribonucleic acid CO 2 = carbon dioxide rRNA = ribosomal RNA DNA = deoxyribonucleic acid tRNA = transfer RNA HDL = high density lipoprotein rough ER = rough endoplasmic reticulum 1. In figure A, PAF & epinephrine (EPI) each enhance platelet aggregation that promotes blood clotting, combined, they have a(n) ____ interaction that will ______ clotting. a. antagonistic - inhibit b. additive - inhibit c. synergistic - promote d. additive - promote 2. A scientific theory will be discarded by scientists if a. numerous critical tests support it. b. a simpler, and more inclusive explanation exists. c. tests can’t be done with existing technology. d. a new theory explains less than the original. 3. Place these body divisions in hierarchical order from largest to smallest: 1 - organ, 2 - cell, 3 - organ system, 4 - molecule, 5 - tissue. a. 3, 5, 4, 2, 1 b. 4, 3, 1, 5, 2 c. 3, 1, 5, 2, 4 d. 4, 2, 5, 3, 1 4. Which factor is part of a good, double-blind controlled experiment, testing a drug that reduces osteoporosis in women? a. A placebo is given to half of the participants. b. Women chose whether they take the drug or not. c. Scientists measuring the women, know who received the drug. d. Scientists can increase sample size by ignoring ethnicity. 5. The cells of ___________ tissues are ________ to form barriers, secretory or absorptive surfaces. a. epithelial - tightly attached to each other b. connective - scattered & far apart c. neural - tightly attached to each other d. muscle - scattered & far apart 6. A cell with a surface area to volume ratio = ________ has the highest metabolic rate, assuming all other variables are equal. a. 1/100 b. 1/10 c. 10/1 d. 1/1 7. Which variable, given these normal resting to exercise ranges, is the controlled variable in a negative feedback homeostasis loop?
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118exam1-spring07 - BIOLOGY 118 - EXAM 1 April 9, 2007 -...

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