Question

The substances across the cell membrane against the *

1 point

A- Concentration gradient

B- Glucose

C- Iron

D- None​

Answer 1

Answer:

The electrical and concentration gradients of a membrane tend to drive sodium into and potassium out of the cell, and active transport works against these gradients. To move substances against a concentration or electrochemical gradient, the cell must utilize energy in the form of ATP during active transport.

Answer 2

Answer:

concentration gradient.

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