All of the following are examples of primary active transpo, except:

A. The Na+/K+ ATPase in the red cell membrane

B. The H+/K+ ATPase in the parietal cell of stomach

C. Na+/ glucose sympoer

D. SERCA in the skeletal muscle

Correct Answer: Na+/ glucose sympoer

Description: Sodium/glucose sympoer is an example of secondary active transpo. SERCA: Sarcoplasmic Endoplasmic Reticulum Ca++ ATPase. It transpos two molecules of Ca++ for each molecule of ATP hydrolysed. Ca++ pumped out of the sarcoplasm, into the longitudinal tubules, to decrease the sarcoplasmic and thus causes muscle relaxation.

Category: Physiology

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