Which of the following is not a form of active transport?

a. Sodium-potassium pump

b. endocytosis

c. exocytosis

d. bulk flow
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1 Answer

The answer is D. Bulk flow. The other 3 require energy making them methods of active transport. Bulk flow does not require energy and is the result of diffusion due to concentration gradients.
by Level 3 User (8.5k points)
Thank you, and the answer is correct. I finally found it!
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