Mechanisms of Transport

AP Biology· difficulty 3/5

Each cycle of the Na⁺/K⁺ pump moves

  • A

    1 Na⁺ in and 1 K⁺ out

  • B

    Glucose in and out

  • C

    3 Na⁺ out and 2 K⁺ in

    check_circle
  • D

    2 Na⁺ in and 3 K⁺ out

Explanation

Standard stoichiometry: 3 Na⁺ exported, 2 K⁺ imported per ATP hydrolyzed.

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