Active transport

Active transport

Active transport is the movement of substances from a more dilute solution to a more concentrated solution.
As this movement is against a concentration gradient, it requires energy from respiration.
Active transport facilitates:
- The absorption of mineral ions from very dilute solutions in the soil into plant root hairs. Plants require ions for healthy growth.
- The absorption of sugar molecules from lower concentrations in the gut into the blood, which has a higher sugar concentration. Sugar molecules are needed for cell respiration.

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