BI-1712
Diffusion
Biology · Secondary 4 · Medium · Diffusion
A villus epithelial cell absorbs glucose by diffusion from the lumen of the small intestine. Which statement best describes diffusion in this context?
- Net movement of glucose from higher to lower concentration without energy use
- Net movement of glucose from lower to higher concentration using energy
- Random movement of glucose in all directions with no net change
- Bulk flow of blood carrying glucose around the body
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