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Exam%202%20POSTED - Exam 2 Exam 2-EBIO 1220, General...

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Exam 2 Exam 2 —EBIO 1220, General Biology Professors Rebecca Safran and Kendi Davies Section 003 (TR 9:30) and 004 (TR 12:30) INSTRUCTIONS: 1) READ THE INSTRUCTIONS 2) ANSWER SHEET : BE SURE to fill in - your name, - correct ID number (not social security number) - section number (003 or 004) 3) EXAM : Read each question carefully and then select the best answer to the question. Please use a #2 pencil. There are 50 questions. Be sure you have answered every question. 4) HANDING IN THE EXAM : You must return your exam with your answer sheet. There is a numbered sheet on the last page that you can use to list your answers and then check your answers with the answer key, which will be posted on CULearn soon after the exam. GOOD LUCK! CU Honor Code Pledge: “On my honor as a University of Colorado at Boulder student I have neither given nor received unauthorized assistance on this work.” Signature:
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Exam 2 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Three-chambered hearts generally consist of which of the following numbers of atria and ventricles? a. one atrium; one ventricle b. two atria; one ventricle c. three atria; no ventricles d. no atria; three ventricles e. one atrium; two ventricles 2. The Maternal-and-Embryo Protection Hypothesis proposed to explain the occurrence of nausea and vomiting during pregnancy predicts that a. Pregnant women have aversions to foods that may be potentially harmful b. Natural selection has favored the cravings and aversions of pregnant woman c. We all face problems related to toxins and pathogens in our food d. A and B e. A, B and C 3. Consider an ectotherm and an endotherm of equal body size. The ectotherm is more likely to survive an extended period of food deprivation than the endotherm because a. the ectotherm is sustained by a higher basal metabolic rate. b. the ectotherm will expend less energy/kg body weight than the endotherm. c. the ectotherm will invest little to no energy in temperature regulation. d. actually, assuming equal size, the ectotherm and the endotherm will have the same energy expenditures. e. both B and C 4. What are antigens? a. proteins found in the blood that cause foreign blood cells to clump b. proteins embedded in B cell membranes c. proteins that consist of two light and two heavy polypeptide chains d. foreign molecules that trigger the generation of antibodies e. proteins released during an inflammatory response 5. A study of the major histocompatibility complex (MHC) and human mate choice revealed: a. MHC is correlated to body odor b. Females chose males with most similar MHC variation c. Females chose males with most different MHC variation d. Mate choice was not related to hormonal status e. Mate choice was unaffected by body odor
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Exam 2 6. Which of the following is (are) not involved in the activation and functioning of cytotoxic T cells? a.
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This note was uploaded on 05/25/2008 for the course EBIO 1220 taught by Professor Demig-addams during the Spring '07 term at Colorado.

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Exam%202%20POSTED - Exam 2 Exam 2-EBIO 1220, General...

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