BI-406
Diffusion
Biology · Secondary 3 · Hard · Diffusion
In a person, the concentration of glucose in the small intestine is lower than in the blood. Yet, glucose still enters the blood from the small intestine. Which statement best explains this?
- Glucose is absorbed against the concentration gradient by active transport
- Glucose diffuses down the concentration gradient into the blood
- Glucose moves by osmosis into the blood
- There is no net movement of glucose in this situation
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