SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Large SA, Large V
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Small SA, Large V
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Large SA, Small V
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Small SA, Small V
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Detailed explanation-1: -In general, small size is necessary for all cells, whether prokaryotic or eukaryotic.
Detailed explanation-2: -The need to be able to pass nutrients and gases into and out of the cell sets a limit on how big cells can be. The larger a cell gets, the more difficult it is for nutrients and gases to move in and out of the cell.
Detailed explanation-3: -A larger surface area to volume ratio is more efficient than a smaller ratio. This is due to the amount of plasma membrane relative to the volume of the cell. The more plasma membrane available to transport materials in and out of the cell, the more efficient the cell will be in completing its specific functions.
Detailed explanation-4: -If a cell is too large, nutrients simply aren’t able to diffuse through the entire volume of the cell quickly enough. Materials must be able to reach all parts of a cell quickly, and when volume is too large relative to surface area, diffusion cannot occur at sufficiently high rates to ensure this.