APBioPhysReview1

APBioPhysReview1 - Physiologist: _ Period: _ Date: _ AP Bio...

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Physiologist: ____________________________________ Period: _______ Date: ____________ AP Bio Physiology Review 1 1. Which choice best describes a reasonable evolutionary mechanism for animal structures becoming better suited to specific functions? a. Animals that eat the most food become the most abundant. b. Animals that restrict their food intake will become less abundant. c. Animals with mutations that give rise to effective structures will become more abundant. d. Animals with inventions that curtail reproduction will become more abundant. e. Animals with parents that continually improve their offspring's structures will become more abundant. 2. To increase the effectiveness of exchange surfaces in the lungs and in the intestines, evolutionary pressures have a. increased the surface area available for exchange. b. increased the thickness of these linings. c. increased the number of cell layers. d. decreased the metabolic rate of the cells in these linings. e. increased the volume of the cells in these linings. 3. Positive feedback has occurred when a. an increase in blood sugar increases the secretion of a hormone that stores sugar as glycogen. b. a decrease in blood sugar increases the secretion of a hormone that converts glycogen to glucose. c. a nursing infant's sucking increases the secretion of a milk-releasing hormone in the mother. d. an increase in calcium concentration increases the secretion of a hormone that stores calcium in bone. e. a decrease in blood calcium increases the amount of the hormone that releases calcium from bone. The following questions refer to Figure 40.1. 4. What does the difference in temperature between arteries and veins in the goose's legs indicate? a. The legs need to be kept cool so that muscles will function well. b. The feet need to be kept at the same temperature as the abdomen so that the feet do not freeze in water. c. Minimizing the temperature difference between the feet and the abdomen means the goose will lose less heat. d. The arterial blood is always cooler in the abdomen, compared to its temperature in the feet of the goose. e. The goose's feet function well even when their temperature falls below freezing.
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5. Seasonal changes in snake activity are explained by which statement? a. The snake is less active in winter because the food supply is decreased. b. The snake is less active in winter because it does not need to avoid predators. c. The snake is more active in summer because that is the period for mating. d. The snake is more active in summer because it can gain body heat by conduction. e. The snake is more active in summer as a result of being disturbed by other animals. 6. To leave the digestive tract, a substance must cross a cell membrane. During which stage of food processing does this take place? a.
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This note was uploaded on 03/20/2010 for the course BIOL 132 taught by Professor Dr.d during the Spring '10 term at Texas Southern.

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APBioPhysReview1 - Physiologist: _ Period: _ Date: _ AP Bio...

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