Homework 1

5 and 19c during one year b the osmolarity of sea

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Unformatted text preview: rth of the arctic circle in water whose temperature varies between  ­1.5 and  ­1.9˚C throughout the year. The core temperature of the fish varies between  ­1.5 and  ­1.9˚C during one year. b. The osmolarity of sea water is approximately 1 osmolar, and its [Na+] is about 460 millimolar. A shark living in the Sargasso Sea just off shore from the Bahamas has a blood osmolarity of 1 osmolar and a blood [Na+] of 200 millimolar. c. Fulfilling one of your dreams, you travel from San Diego, where the partial pressure of O2 (PO2) is about 21.2 kiloPascals (kPa) to the top of Denali (Mt. McKinley) in Alaska, where the PO2 is about 10 kPa. The amount of O2 per ml in your arterial blood is 30% lower at the top of the mountain than it was in San Diego, and you have a terrible headache. 3. What variable is regulated by this sys...
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This document was uploaded on 03/01/2014 for the course BIPN 106 at UCSD.

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