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Which of the following statements best describes the difference between aerobic and anaerobic metabolism? Check all...

Which of the following statements best describes the difference between aerobic and anaerobic metabolism?

Check all that apply.

- Anaerobic metabolism produces more ATP than aerobic metabolism.
- Anaerobic metabolism produces less ATP than aerobic metabolism.
- Only aerobic metabolism can occur in the absence of oxygen.
- Anaerobic metabolism does not produce lactate while aerobic metabolism does.
- Both anaerobic and aerobic metabolism run through glycolysis, Krebs cycle, and the electron transport chain.
- Only anaerobic metabolism can occur in the absence of oxygen.
- Anaerobic metabolism produces lactate while aerobic metabolism does not.

You have discovered a new animal and have decided to test its muscle physiology during exercise. While exercising the animal, you continually assay the blood and muscle chemistry. Your assays demonstrate that blood glucose levels drop dramatically and remain low throughout the whole exercise period. Additionally, you find that the muscle fibers exhaust their glycogen stores and that there is little to no glucose or lactate found within the cells. However, ATP levels within the cell are normal. Which of the following can you conclude regarding this animal's ability to maintain muscle activity during exercise?

The animal only uses fats for muscle metabolism within the cell in order to produce ATP.
The animal only utilizes anaerobic metabolism for the production of ATP.
The intestinal transport of glucose in these animals must be extraordinarily high.
The animal produces an excessive amount of lactic acid that is delivered to the liver for gluconeogenesis.

Match each of the following organs/tissues with their correct role in metabolic pathways during exercise.

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Adipose tissue

Intestine

Liver

Lungs

1. Exchange of oxygen (O2) and carbon dioxide (CO2):

2. Can use various different substances to produce a new source of glucose for metabolism:

3. Will break down stores to provide glycerol and fatty acids as intermediates for metabolic pathways:

4. Is the site of absorption of ingested glucose:
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Answer #1

Anaerobic metabolism produces less ATP than aerobic metabolism.

Only anaerobic metabolism can occur in the absence of oxygen.

Anaerobic metabolism produces lactate while aerobic metabolism does not.

Note: the above three statements are true for aerobic and anerobic metabolism as per your first question.

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