Multiple choice general knowledge science & technology

Movement of cell against concentration gradient is called

  1. osmosis

  2. active transport

  3. diffusion

  4. passive transport
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP). This is the opposite of passive processes like osmosis and diffusion, which move substances down their concentration gradient without energy input.

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