Which statement explains why oxygen molecules easily diffuse across a cell membrane while protein molecules do not? A. Oxygen gas exists as molecules, but proteins are either liquids or solids. B. Oxygen molecules fit between fatty acids, but protein molecules are too big. C. Proteins contain oxygen that is more useful inside a cell than outside the cell. O D. Protein molecules form membrane channels that oxygen molecules can pass through.
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Which statement explains why oxygen molecules easily diffuse across a cell membrane while protein mo...
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