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  • one year ago

Which of the following accurately describes an example of how materials can move across the cell membrane through active transport? A protein acts as a channel to allow large, hydrophilic molecules to diffuse across the cell membrane. A protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration. The cell membrane folds to surround a substance and bring the substance inside the cell during exocytosis. Water moves by osmosis from higher concentration to lower concentration by passing through proteins called aquaporins.

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  1. Teddyiswatshecallsme
    • one year ago
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