A-LevelBiologyCell membranes and transport9700/12 · Oct/Nov 2018 · Q161 Mark
The diagram is a drawing from an electron micrograph of a typical animal cell. How many layers of phospholipids will a molecule of oxygen cross to travel directly from X, outside the cell, to Y, the matrix of the mitochondrion?
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A3
B4
C5
D6
✓ Correct answer
D: 6
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