Multiple Choice
A substance moving from outside the cell into the cytoplasm must pass through __________.
5. Cell Components
Prokaryotic & Eukaryotic Cells
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Which of the following is/are likely to limit the maximum size of a cell?
A
The time it takes a molecule to diffuse across a cell
B
The cell's surface-to-volume ratio
C
The shape of the cell
D
None of the choices is correct.
E
All of the choices are correct.
Verified step by step guidance1
Understand that the maximum size of a cell is influenced by several factors, including the efficiency of molecular diffusion, the surface-to-volume ratio, and the cell's shape.
Consider the time it takes for a molecule to diffuse across a cell. Diffusion is a passive process that depends on the distance molecules must travel. As cell size increases, the time required for diffusion also increases, potentially limiting cell size.
Examine the cell's surface-to-volume ratio. As a cell grows, its volume increases faster than its surface area, which can limit the ability of the cell to exchange materials with its environment efficiently. This ratio is crucial for nutrient uptake and waste removal.
Analyze the shape of the cell. The shape can affect how efficiently a cell can maintain its surface-to-volume ratio and facilitate diffusion. For example, elongated or flattened shapes can help maintain a favorable surface-to-volume ratio.
Conclude that all the factors mentioned (diffusion time, surface-to-volume ratio, and cell shape) are interconnected and collectively contribute to limiting the maximum size of a cell.
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