PSIO 420 exam #1 - PSIO 420/520 practice problem set #1:...

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PSIO 420/520 practice problem set #1: Bioenergetics 1. The following figure illustrates the relationship between average running speed and exercise duration, using a logarithmic scale, for men’s track events. Based on your knowledge of cellular ATP synthesis, indicate the energy system that is most responsible for the ATP yield for each curve component. A: _____________________________ Average running speed B: _____________________________ C: _____________________________ Exercise duration (log scale) 2. Answer the following questions based on your understanding of the contribution of each energy system to ATP yield during exercise. Note: CP = creatine phosphate; GLY = glycolysis; AER = aerobic metabolism. a. Which energy system yields ATP at the fastest rate ? CP GLY AER b. Which energy system is most limited by total quantity of available substrate? CP GLY AER c. Which energy system(s) has no oxygen requirement ? CP GLY AER d. Which system’s contribution to ATP yield is measured via indirect calorimetry ? CP GLY AER 3. a. Direct calorimetry is a technique used to measure metabolic rate by directly measuring what variable? Measured variable: ___________________________________ b. Is direct calorimetry a reliable means to evaluate metabolism during exercise? Circle one: YES NO Why or why not? ______________________________________________________________________ 4.
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This note was uploaded on 05/13/2008 for the course PSIO 420 taught by Professor Keen during the Spring '08 term at University of Arizona- Tucson.

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PSIO 420 exam #1 - PSIO 420/520 practice problem set #1:...

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