Which of the Following Represents the Order That Molecules Cross

question 144

Multiple Choice

Which of the following represents the order that molecules cross a synthetic membrane composed of phospholipids but not proteins, from most easily (freely permeable) to least easily (not permeable) ?

• A)O₂, sodium ions (Na⁺), water (H₂O), glucose
• B)O₂, water (H₂O), glucose, sodium ions (Na⁺)
• C)sodium ions (Na⁺), glucose, water (H₂O), O₂
• D)water (H₂O), glucose, sodium ions (Na⁺), O₂
• E)glucose, water (H₂O), O₂, sodium ions (Na⁺)

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