Cell physiology basics · Physiology

Passive transport across the cell membrane does NOT require:

  1. A concentration gradient
  2. Carrier proteins
  3. Energy (ATP)
  4. Membrane permeability
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Correct answer: Energy (ATP)

Passive transport relies on existing gradients and does not consume ATP. Examples include diffusion and facilitated diffusion.

Difficulty: Medium Question 11 of 20

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