A-LevelBiologyCell membranes and transport9700/12 · Oct/Nov 2016 · Q161 Mark
Which observations support a link between active transport and ATP production? 1 Active transport occurs only in living cells. 2 The rate of active transport decreases in low oxygen concentrations. 3 Companion cells have large numbers of mitochondria.
A1, 2 and 3
B1 and 2 only
C2 and 3 only
D3 only
✓ Correct answer
A: 1, 2 and 3
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