The early dilation (swelling) of the cell's endoplasmic reticulum results in:
a. increased aerobic metabolism.
b. failure of DNA.
c. reduced protein synthesis.
d. increased Na+-K+ pump function.
ANS: C
Early dilation of the endoplasmic reticulum causes the ribosomes to detach from the rough endo-plasmic reticulum, reducing protein synthesis. Aerobic metabolism is a normal process and would not lead to swelling. Cellular swelling will not alter cellular DNA. A reduction in the Na+-K+ pump leads to an intracellular accumulation of sodium and calcium and diffusion of potassium out of the cell. Sodium and water can then enter the cell freely, and cellular swelling results.
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