During the plateu phase of a stedy state exercise: Explain your answer
a. The O2 demand of the body is larger than the O2 supply.
b. The O2 demand of the body is smaller than the O2 supply
c. The production of lactic acid is zero
d. All the ATP required may be supplied by aerobic phosphorylation
e. Aerobic and anaerobic ATP resynthesis are equal
During the plateu phase of a stedy state exercise: Explain your answer
a. The O2 demand of the body is larger than the O2 supply.
b. The O2 demand of the body is smaller than the O2 supply
c. The production of lactic acid is zero
d. All the ATP required may be supplied by aerobic phosphorylation
e. Aerobic and anaerobic ATP resynthesis are equal
Related textbook solutions
Related questions
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| 3. | What is a fate of pyruvate during alcoholic fermentation byyeast? | ||||||||||
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| 5. | How are aerobic respiration and anaerobic respirationsimilar? | ||||||||||
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| 7. | Which of the following is the best definition offermentation? | ||||||||||
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| 8. | A reaction that yields energy has a | ||||||||||
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| 9. | Oxidation and reduction reactions are always coupledbecause | ||||||||||
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| 10. | Which of the following is true of aerobic respiration? | ||||||||||
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Question 18
The process that forms new glucose in the liver is called ...
| A. | glycogenolysis | |
| B. | Krebs cycle | |
| C. | lipolysis | |
| D. | gluconeogenisis | |
| E. | oxidative phosphorylation |
Question 57
A person exercises in their âfat burning zoneâ for 4 hours at 35% VO2peak. The O2 cost of exercise at that work rate is 0.5L/minute. Following exercise the subject rewards himself with an ice-cream sundae (700kcal). The following statement is true(assume 5kcal/lit of O2):
| A. | The subject is in neutral energy balance | |
| B. | The subject consumed fewer calories than they expended during exercise | |
| C. | The subject consumed more calories than they expended during exercise | |
| D. | Canât say |
Question 52
The primary purpose of the citric acid cycle is...
| aerobic glycolysis | ||
| gluconeogenesis using lactate | ||
| the decarboxylation of carbon compounds to produce NADH. | ||
| the shuttling of hydrogen ions through the inner mitochondrial membrane |
Question 51
In aerobic ATP production, the role of oxygen is to...
| to keep the electron transport chain operational | ||
| to accept electrons from the 3rd cytochrome and thereby oxidizing it so it can accept new electrons | ||
| act as a oxidizing agent by accepting electrons from the electron transport chain and combining with hydrogen ions (protons) | ||
| all of the above |
Question 50
Glucose is necessary for fatty acid oxidation because...
| its derivative, pyruvate, is condensated with carbonic acid to form oxaloacetate, which in turn is a necessary carbon compound in the citric acid cycle | ||
| it is needed to convert fatty acids to fatty acyl-CoA which in turn is oxidized to acetyl CoA | ||
| glucose is decarboxylated into cytochrome oxidase which is a necessary intermediate in the citric acid cycle | ||
| its derivative, acetyl CoA, is condensated with carbonic acid to form lactase, which in turn is a necessary carbon compound in the citric acid cycle |
Question 2
Enzymes basically work by...
| A. | Directly providing ATP for muscle contraction | |
| B. | Lowering the activation energy required to drive the reaction | |
| C. | Combining with NAD+ to provide energy | |
| D. | Helping oxygen attach to substrate during metabolism | |
| E. | Both A and B |
Anaerobic glycolysis yields a net gain of...
| 5 ATP | ||
| 10 ATP | ||
| 8 ATP | ||
| 2 ATP |
After a few minutes of easy jogging at a submaximal intensity, my oxygen consumption and heart rate reach a plateau and stay at that level for 20 to 30 minutes as I am jogging. With regards to oxygen consumption this would be an example of ...
| A. | intermittent exercise | |
| B. | an oxygen deficit | |
| C. | incremental exercise | |
| D. | a steady state | |
| E. | homeostasis |
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 | |
| D. | close to .9 |
Question 57
A person exercises in their âfat burning zoneâ for 4 hours at 35% VO2peak. The O2 cost of exercise at that work rate is 0.5L/minute. Following exercise the subject rewards himself with an ice-cream sundae (700kcal). The following statement is true(assume 5kcal/lit of O2):
| A. | The subject is in neutral energy balance | |
| B. | The subject consumed fewer calories than they expended during exercise | |
| C. | The subject consumed more calories than they expended during exercise | |
| D. | Canât say |
