Exam3V1-1 - MARTHA HUNTER/ DANIEL PAPAJ/KEVIN BONINE EXAM...

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M ARTHA H UNTER / D ANIEL P APAJ /K EVIN B ONINE EXAM THREE April 10, 2008 182 LECTURE SECTION: TTH 11:00 AM – 12:15 PM PRINT UA NetID: LAST NAME:_______________________________________________________ GENERAL INSTRUCTIONS PRINT your UA NetID and last name above AND on the answer sheet. Color in the answers in the appropriate circles on the answer sheet. Use a Number 2 Pencil, not a pen! Bubble darkly, so the letter can no longer be seen in the circle. 1. Which of the following most accurately reflects a key problem with heat stress? a. Aggregation of protein followed by denaturation, as illustrated by the yellow-orange color of an egg’s yolk. b. Denaturation of protein followed by aggregation, as illustrated by the yellow-orange color of an egg’s yolk. c. Aggregation of protein followed by denaturation, as illustrated by the white of a fried egg. d. Denaturation of protein followed by aggregation, as illustrated by the white of a fried egg. 2. Which of the following functions as a ‘molecular chaperone’ for other proteins? a. Acetylcholine. b. Opsin. c. Retinal. d. Heat shock protein. 3. Heat transfer involves the transfer of: a. Kinetic energy. b. Bioelectrical impulses. c. Conduction. d. Heat particles. 4. The pores in the thorax of Diceroprocta apache cicadas serve to promote what process essential to keeping them cool in the middle of a June day in Tucson? a. Conduction. b. Convection. c. Radiation. d. Evaporation. 5. A kind of bat called a flying fox hangs upside down from a branch during the middle of a hot day in its tropical habitat. As ambient temperature rises, it flaps its wings while still hanging. The movement of air by wing flapping most directly promotes which process essential to keeping cool? a. Conduction. b. Convection. c. Radiation. d. Evaporation.
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6. Plants, like animals, must stay cool in the desert. Many desert plants have grayish or whitish leaves that reflect more sunlight away than do green leaves. Such leaf coloration most likely keeps desert plants cool by affecting what process? a. Conduction. b. Convection. c. Radiation. d. Evaporation. 7. Small desert animals such as kangaroo rats are much less likely than large animals to use which of the following processes to keep cool? a. Conduction. b. Convection. c. Radiation. d. Evaporation. 8. Some species of birds are breeding earlier in the year in response to recent warming trends. Early breeding appears to reflect learning on the part of individuals, rather than genetic change in the population. The process allowing these species to adjust to climate change is: a. Adaptation. b. Phenotypic plasticity. c. Natural selection. d. Mutation. 9. Selective brain cooling in African gazelles involves countercurrent flow in which cool venous blood from the nose runs in a direction opposite to that of hot arterial blood to the brain. Countercurrent flow cools the brain more effectively. In which of the following structures does a countercurrent pattern of flow make gas exchange more effective? a. Gills of fish.
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This note was uploaded on 01/31/2009 for the course BIO 182 taught by Professor Chaux during the Spring '08 term at University of Arizona- Tucson.

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Exam3V1-1 - MARTHA HUNTER/ DANIEL PAPAJ/KEVIN BONINE EXAM...

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