is the movement of molecules across a cell membrane from a region of their lower concentration to a...........

General Science (CHSL) Biology

.................is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration.

Diffusion

Osmosis

Active Transport

Passive Transport

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Explanation:

In cellular biology, active transport is the movement of molecules across a membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement.