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Quiz5.08.key - do we mean and how does it relate to the...

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BIO 325H, Spring 2008 Quiz 5 Name_________________________ You have 10 minutes to take this quiz. Read each problem carefully and make sure that you fully answer the questions asked. Good luck! 1. [2 pts]When resting at sea level in Cancun, famous mountain climber Hilary Edmund has a steady P O2 = 100 mm Hg in the blood plasma of her pulmonary veins. But in the thin air atop Mt. Everest, the P O2 of the blood plasma in Ms. Edmund’s pulmonary veins is only 50 mm Hg. Expressed as a percentage, how much O 2 is being carried by her hemoglobin on Mt. Everest compared to when she is in Cancun? ___ 85% _ ______________ __ 2. [3 pts] A. We discussed the differences between an absorbance spectrum and an action spectrum for a biological pigment. When we are talking about the absorbance spectrum of chlorophyll a what
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Unformatted text preview: do we mean and how does it relate to the color of the pigment? The absorbance spectrum of a pigment is a measure of the degree to which the pigment absorbs particular frequencies/wavelengths of light/electromagnetic radiation. Because the color of a pigment is determined by the frequencies it reflects, the color of the pigment is determined by the frequencies it does not absorb. B. Why can’t plants use infrared or radio wave frequencies of electromagnetic radiation to drive the light reactions of photosynthesis? Infrared and radio wave frequencies of light do not have sufficient energy (their frequencies are too low) to drive the light reactions....
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