O-LevelBiologyCell Biology5090/11 · Oct/Nov 2023 · Q41 Mark
Which row identifies how ions and molecules move by active transport?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Aagainst the concentration gradient: ✓, down the concentration gradient: X, through a membrane: ✓, requiring energy: ✓
Bagainst the concentration gradient: X, down the concentration gradient: ✓, through a membrane: X, requiring energy: X
Cagainst the concentration gradient: X, down the concentration gradient: ✓, through a membrane: ✓, requiring energy: X
Dagainst the concentration gradient: ✓, down the concentration gradient: X, through a membrane: ✓, requiring energy: X
✓ Correct answer
A: against the concentration gradient: ✓, down the concentration gradient: X, through a membrane: ✓, requiring energy: ✓
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