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Unformatted text preview: Question 1: (10 points) Among air-respiring animals, a major challenge is a. the high viscosity of air b . the relatively low oxygen content of air compared to that of water c. keeping respiratory tissues moist d . the dramatically lower solubility of oxygen in air at lower temperatures e. the higher concentration of carbon dioxide in air compared to that of water Question 2: (10 points) Animals that rely on ammonia excretion are called a. osmolytes b . uricotelic c. ammonotelic d . uricolytic e. ureotelic Question 3: (10 points) _______________________ is highly toxic and soluble, and requires large volumes of water for dilution and subsequent excretion across the gills of teleosts. Answer: Question 4: (10 points) Which of the following have loops of Henle for osmotic concentration? a. freshwater bony fish b . birds c. marine fish d . reptiles e. none of the above e....
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