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What is active transport used for?
to transport substances against a concentration gradient: from a lower to a higher concentration gradient
What are root hair cells used for?
providing a larger surface area for a plant to absorb water and mineral ions from the soil
What do plants need mineral ions for?
Growth
Why can’t root hair cells use diffusion?
The concentration of the minerals is usually higher in the root hair cells than in the soil around them
How is active transport used in plants?
To absorb minerals from a very dilute solution against a concentration gradient.
Where does a plant receive the energy for active transport?
from respiration
Where is active transport used in humans?
In the gut when there is a lower concentration of nutrients in the gut than in the blood.
When does diffusion occur in the gut?
When there’s a higher concentration of glucose and amino acids in the gut than in the blood
How does the gut being able to do diffusion and active transport useful?
Allows nutrients to be transported into the blood with or against a concentration gradient
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