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Question

Which of the following factors affect the rate of respiration?

A
Temperature
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B
Oxygen
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C
Salts
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D
All of the above
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Solution

The correct option is D All of the above
Rate of respiration depends on several factors such as temperature, oxygen, carbon dioxide, salts, water, hormones, light, inhibitors, age, injury/disease, etc. Increase in temperature increases the rate of respiration. Rate of respiration increases with increase in oxygen concentration. Rate of respiration increases with the increase in salt concentration around the cell as absorption of ions would require more metabolic energy.

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