2007 EXAM 3 Practice Test - kirkton

2007 EXAM 3 Practice Test - kirkton - Biology 101 Fall 2007...

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Biology 101 – Fall 2007 Name: _______________________ EXAM III Part I. Multiple Choice . Please choose the option that best answers each question. (20 questions; 3 points per question = 60 points). 1. What is NOT an example of animal form relating to function? a. In similarly sized animals, dogs have larger hearts due to differences in hunting behavior. b. Due to the higher blood pressures they experience, arteries have more smooth muscle and a thicker elastic lining than veins c. Regardless of beak size, all finches eat the same food. d. When compared to other mammals, elephants have relatively thicker bones than expected based on their body mass. e. Epithelial tissue structure varies throughout the body depending on the function of organ it is lining. 2. All other factors being equal, which aquatic environment will have the greatest P O 2 ? a. Warm, salty water at low elevation. b. Cool, salty water at low elevation. c. Warm, fresh water at high elevation. d. Cool, fresh water at high elevation. e. Cool, fresh water at low elevation. 3. During their development, salmon change osmotic environments. They hatch in freshwater and migrate downstream to the ocean to feed and grow before returning to freshwater to breed. Assume you are interested in understanding how osmoregulation varies in these animals during development. What is an appropriate prediction about their urine production? a. The urine produced when the salmon is in the freshwater is more watery (dilute) than the urine produced when in the marine environment. b. The urine produced in the freshwater environment has a higher osmolarity than the urine produced in the marine environment. c. When in the freshwater environment, you expect the salmon to drink lots of water. d. When in the marine environment, you expect the salmon to gain lots of water through its gills. e. Both “b” and “c”. 1
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4. Unlike larger endotherms, small endothermic animals will enter a daily torpor if the temperatures are cold enough. What BEST explains this response to temperature? a. Larger endotherms have brown adipose tissue and do not have any problem producing heat. b. Small endothermic animals lack an integrator to regulate body temperature by negative feedback homeostasis. c. Since the rate of heat loss is much greater for a smaller animal in a cold environment, it would be too energetically costly to raise its metabolic rate enough to achieve its optimal body temperature on a cold night. d. Regardless of temperature, the mass-specific metabolic rates of smaller endothermic animals are always significantly lower than larger ones, so temperature falls. e. Regardless of temperature, small endotherms are thermoconformers in all environmental conditions. 5.
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2007 EXAM 3 Practice Test - kirkton - Biology 101 Fall 2007...

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