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Bacterial cells have a much higher rate of metabolism than animal cells. Under ideal conditions some bacteria double in size and divide every 20 min, whereas most animal cells under rapid growth conditions require 24 hours. The high rate of bacterial metabolism requires a high ratio of cell surface area to cell volume. Select the statement(s) that describe how a large surface area to volume ratio (SA: V) favors a faster metabolism. A large SAV increases the diffusion rate, preventing buildup of waste products in the cell. Rapid diffusion of nutrients into the cell requires a large SA: V. A large SA: V traps more heat energy in the cell, resulting in a higher rate of metabolism. Increased cell-cell contact and exchange of macromolecules occurs as SA: V increases.
