O-LevelBiologyCell Biology5090/11 · Oct/Nov 2021 · Q21 Mark
Which process occurs by diffusion alone?
Amovement of carbon dioxide into the palisade cells in a leaf
Buptake of magnesium ions by root hair cells
Cmovement of food from the stomach to the duodenum
Dtransfer of glucose molecules from the ileum into the blood
✓ Correct answer
A: movement of carbon dioxide into the palisade cells in a leaf
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