Exam 2 - 1) The mammalian body's automatic tendency to...

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1 1) The mammalian body’s automatic tendency to maintain a constant internal environment is termed: a) positive feedback b) physiologic control *c) homeostasis d) static equilibrium e) organ system hierarchy 2) Which of the following is a functional component of the kidney: a) neuron *b) nephron c) nematocyst d) microvilli e) cecum 3) For your study abroad semester, you decide to work in South America. During your time there, you encounter broad mammalian diversity, including both eutherians and marsupials (no monotremes, however). Which of the following characteristics would you NOT find within these mammal groups? *a) solid-shelled eggs b) a maternal pouch c) hair d) milk e) a complex placenta 4) Which of the following is/are examples of the “countercurrent exchange system”? a) the arrangement of arteries and veins in fast-swimming fishes (e.g., tuna) b) the development of anterior and posterior air sacs in bird lungs c) filtration of blood within the glomerulus in the nephron d) the gill structure of fishes *e) a and d 5) Why is the “secondary immune response” stronger and faster than the “primary immune response”? *a) because of production of memory B cells during the first exposure b) because of production of memory T cells during the first exposure c) because of production of memory macrophages during the first exposure d) because of production of natural killer cells following the first exposure e) none of the above, the primary response is stronger and faster than the secondary response Only memory B cells are produced by the immune system. 6) Which of the following is NOT an adaptation of birds that helps to promote flight? a) hollow bones b) elimination of one ovary and urinary bladder *c) production of uric acid d) continuous-flow breathing system e) feathers
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2 Uric acid helps birds (and reptiles) conserve water, but is not an adaptation that specifically helps aid flight, as are the others listed. 7) Which of the following characteristics best describe the “super spreaders” Mary Mallon and Gaetan Dugas? I. HIV II. Typhoid fever III. Carrier (e.g., infected with parasite but suffered no symptoms of the disease) a) Dugas: I and III; Mary: II b) Dugas: II and III; Mary: I and III *c) Dugas: I; Mary: II and III d) Dugas: I and III; Mary: II and III e) Dugas: II; Mary: I and III Mary Mallon was a true “carrier”, meaning that she was infected with the pathogen but suffered no symptoms (this was emphasized in lecture). Dugas died of AIDS. 8) Which of the following is NOT true of ectothermy? a) ectotherms can be homeothermic (maintain relatively constant temperature) b) ectotherms have less complex circulatory systems c) ectotherms have lower metabolic demands (relative to a similar-sized endotherm) d) ectotherms can avoid periods of extreme climate through estivation *e) ectotherms can regulate their temperature through metabolic activity 9) Terrestrial insects transport oxygen and carbon dioxide through which of the following:
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This note was uploaded on 06/11/2008 for the course EBIO 1220 taught by Professor Demig-addams during the Spring '07 term at Colorado.

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Exam 2 - 1) The mammalian body's automatic tendency to...

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