Which statement explains the significance of myoglobin muscle tissue?

Myoglobin can associate with oxygen in conditions of high carbon dioxide tension

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Myoglobin can dissociate from oxygen most readily under aerobic conditions

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Myoglobin acts as an oxygen store delaying the onset of anaerobic respiration

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Myoglobin acts as a buffer to hydrogen ions produced during anaerobic respiration

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Solution

The correct option is A Myoglobin can associate with oxygen in conditions of high carbon dioxide tension
Under high carbon dioxide tension conditions, hydrogen ions and carbon dioxide are found in high concentrations around actively metabolizing tissues. In the capillaries, the release of oxygen from hemoglobin occurs. The overall result is to facilitate oxygen release into blood plasma and subsequent uptake of oxygen by the high-affinity myoglobin in the tissues. They can therefore temporarily provide oxygen when blood oxygen delivery is insufficient during periods of intense muscular activity.

So, the correct option is 'Myoglobin can associate with oxygen in conditions of high carbon dioxide tension'.

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Similar questions

Q. Identify the correct statement about respiration.
1. Without oxygen, cellular respiration is not possible in humans.
2. Pyruvate is produced only in the case of aerobic respiration.
3. Anaerobic respiration is possible in yeast and humans.
4. The energy produced during cellular respiration is stored as ATP.

All cells in the body undergo aerobic respiration. However, in the absence of oxygen, some cells such as muscle cells undergo anaerobic respiration.

The breakdown of pyruvate in muscle cells in the absence of oxygen results in the production of which compound?

Select True(T) or False(F) in the following statements regarding aerobic and anaerobic respiration.

1. Aerobic respiration proceeds in the presence of oxygen.
2. Anaerobic respiration proceeds in the absence of oxygen.
3. In anaerobic respiration end product is water.
4. Aerobic respiration occurs normally throughout life.

In anaerobic respiration, yeasts can produce alcohol from pyruvate. Imagine a situation in which we control oxygen intake and initiate anaerobic respiration in our body, can we produce alcohol in our body?

Q. Which of these is true about anaerobic respiration?

(a) Oxygen is utilized
(b) Carbon dioxide is given out
(c) Amount of energy released is more than in aerobic respiration
(d) Sometimes it occurs in the human body also

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