Active transport in plants 2.0 / 5 based on 1 rating ? BiologyRespiration and exerciseGCSEAQA Created by: EmmaCreated on: 07-05-13 18:52 What is active transport? When substances are absorbed against a concentration gradient eg. from a low concentration to a high concentration 1 of 10 What are root hairs specialised for? Absorbing water and minerals 2 of 10 How do long hairs grow? The cells on the surface of the plant roots grow into long hairs which stick into the soil 3 of 10 What is good about root hair cells? They have a large surface area which is good for absorbing water and mineral ions. 4 of 10 What is most of the water and mineral ions absorbed by? Root hair cells 5 of 10 What is the concentration like in the root hair cell? The concentration is usually higher in the root hair cell than in the soil 6 of 10 Why doesnt root hairs fit the rules of diffusion? Because the concentration is higher in the root hair cell than in the soil around it 7 of 10 What does active transport allow the plant to do? To absorb minerals from a very dilute solution against a concentration gradient 8 of 10 What is active transport essential for? Growth, but it needs energy from respiration 9 of 10 Does active transport also happen in humans? Yes, when taking glucose from the gut and kidney tubules 10 of 10
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