BPK 143 Chapter Notes -Plyometrics, Muscle Contraction, Interval Training
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Question 21
During exercise that is predominately anaerobic, pyruvate is converted to...
A. | NAD+ | |
B. | ATP | |
C. | lactic acid | |
D. | acetyl CoA | |
E. | water |
Question 20
Fatty acids are allowed to enter the mitochondria only when they have a CoA group attached to them.
True
False
Question 16
A 100-meter sprinter that you are training reports that a friend suggested that he take a supplement called âSprintex.â The label states that consuming this supplement will âturbocharge your mitochondria.â What effect would this supplement have on the athleteâs sprint performance?
A. | Improve | |
B. | Worsen | |
C. | No Change | |
D. | Can't tell |
Question 15
Why does muscular work become increasingly difficult with lactic acid accumulation?
because lactic acid causes muscle injury | ||||||||||||||
because lactic acid interferes with the diffusion of oxygen into mitochondria. | ||||||||||||||
because lactic acid causes a rise in muscle temperature with renders enzymes involved in the glycolysis and the citric cycle non-functional | ||||||||||||||
because the rising concentration of hydrogen ions leads to a drop in ph which renders enzymes involved in the glycolysis and the citric cycle non-functional Question 13 A swimmer you are training for a 100-meter swim even reports that he is taking a supplement that improves isocitrate dehydrogenase activity. Assuming that the typical swim time for this individual is 52 seconds the likely effect would be:
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Question 13
A swimmer you are training for a 100-meter swim even reports that he is taking a supplement that improves isocitrate dehydrogenase activity. Assuming that the typical swim time for this individual is 52 seconds the likely effect would be:
A. | Greatly improved swim performance | |
B. | Worsened swim performance | |
C. | No change | |
D. | Not enough information |
Question 14
Which of the following reactions will result in the most ATP production?
A. | Breakdown of 30 mols of creatine phosphate (CP) | |
B. | Complete oxidation of 5.0 mols pyruvic acid or pyruvate | |
C. | Oxidation of 10 mols of NADH + H+ | |
D. | Breakdown of 2 mols of glucose to 4 mols of lactic acid |
Question 15
Why does muscular work become increasingly difficult with lactic acid accumulation?
because lactic acid causes muscle injury | ||
because lactic acid interferes with the diffusion of oxygen into mitochondria. | ||
because lactic acid causes a rise in muscle temperature with renders enzymes involved in the glycolysis and the citric cycle non-functional | ||
because the rising concentration of hydrogen ions leads to a drop in ph which renders enzymes involved in the glycolysis and the citric cycle non-functional |
Question 16
A 100-meter sprinter that you are training reports that a friend suggested that he take a supplement called âSprintex.â The label states that consuming this supplement will âturbocharge your mitochondria.â What effect would this supplement have on the athleteâs sprint performance?
A. | Improve | |
B. | Worsen | |
C. | No Change | |
D. | Can't tell |
Question 17
The RQ measured for a subject who has been jogging easily at 70% VO2max for about 40 minutes and is in a steady state will likely be?
A. | over 1.0 | |
B. | close to .7 | |
C. | close to .5 |