📝 Multiple Choice Question
General-science
In a plant cell the concentration of minerals in the vacuole is higher than in the cytoplasm because of
A
Passive diffusion through the tonoplast
B
Active transport against the concentration gradient
C
Osmosis of water into the vacuole
D
Facilitated diffusion through carrier proteins
Explanation
The tonoplast membrane uses energy (ATP) to pump ions into the vacuole against their concentration gradient.
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