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Question

A small cell size presents a larger surface area to volume ratio. What is/are the benefits of the large surface area?

A
Quick exchange of respiratory gases
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B
All of the above
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C
Ease of repair of any damage to the cell
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D
Efficient nutrient diffusion into the cell
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Solution

The correct option is B All of the above
The surface area to volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. So, a small size favours the efficient diffusion of gases and nutrients. In case of any injury, timely repair can be done to prevent the loss.

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