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24 February, 13:30

The diagram shows molecules moving across a selectively permeable membrane. The smaller circles represent salt molecules, and the dashed line represents the membrane. Which statement best describes the movement of the salt molecules?

Their movement requires energy.

Their movement represents active transport.

They move from high concentration to low concentration.

They become unevenly distributed.

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Answers (2)
  1. 24 February, 14:32
    0
    They move from high concerntartion to low concertration

    Explanation:

    the diagram is not provided but am guessing there were bigger circles which could not pass through, which shows that the membrane was selectively permeable to smaller salt molecules. The movement across the membrane did not require energy.
  2. 24 February, 16:21
    0
    it is c they move from high concentration to low concentration
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