1: Cell Biology

Students analyze cell structure and function, calculate surface-to-volume ratios for different cell shapes, compare prokaryotic and eukaryotic organelles, and interpret membrane transport mechanisms.

Determining Cell Efficiency Using Surface Area to Volume Ratio

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name	Volume (μm3)	Surface area (μm2)	SA-to-V ratio
Cell 1	6.3	17.2	2.7
Cell 2	4.0	16.1	4.0
Cell 3	2.1	2.4	1.1
Cell 4	10.3	14.4	1.4

Which one of the following cells will be able to eliminate waste most efficiently? and why?

• A. Cell 1 given it has the largest surface area which will enable it to eliminate all of its wastes quickly.
• B. Cell 2 characterized by the highest surface area-to-volume ratio which facilitates the exchange of materials between a cell and its environment.
• C. Cell 3 having the smallest volume and will not produce as much waste as the other cells.
• D. Cell 4 as it has the largest volume to allow wastes to easily diffuse through the plasma membrane.

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