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B265FT2S06 - Biology 265 Second Test Spring 2006 Form 1 1...

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Biology 265 Second Test Spring 2006 Form 1 1. This week a satellite crashed on Eos, scientists were surprised to find an atmosphere with 30% oxygen and an atmospheric pressure of 900 mmHg. What is the partial pressure of oxygen on this asteroid? a. 2700 mmHg b. 27 mmHg c.. 30 mm Hg d. 270 mm Hg 2. In setting the rate of breathing, neurons of the inspiratory center of the medulla are most directly regulated by 3. Which respiratory pigment is found inside a muscle cell ? 4. What gas is most associated with the bends ? 5. If a diffusional exchange of oxygen between the blood and water is concurrent (same direction), what is the highest % of saturation the blood can reach ? a. 99% b. 10% c. 50% d. 33% 6. The difference in partial pressure between the artioles and venules in the tissue is much greater for carbon dioxide than oxygen. a. true b. false 7. When bicarbonate is formed from carbonic acid, the local pH 8. What is the role of DPG( 2,3,diphosphoglycerate) in oxygen transport ?
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