Biology B3 1.2 Active transport. 0.0 / 5 ? BiologyExchange of materialsGCSEAQA Created by: Atlanta and JacobCreated on: 19-03-16 16:01 What does active transport do? Active transport allows cells to take in substances against a concentration gradient. 1 of 9 What energy does active transport use? Active transport uses energy from respiration. 2 of 9 What substances can be absorbed by active transport? Ions, from dilute solutions, and other substances such as sugar can be absorbed by active transport. 3 of 9 How does active transport differ in terms of needs in relation to diffusion and osmosis? Active transport needs energy whereas diffusion and osmosis do not. 4 of 9 How do cells absorb substances which are in short supply (i.e. against the concentration gradient) using active transport? Across partially permeable membranes against the concentration gradient. 5 of 9 What energy does active transport require? Energy released in respiration. 6 of 9 How do root calls absorb mineral ions? From the dilute solutions in the soil by active transport. 7 of 9 How is glucose reabsorbed? It can be reabsorbed in the kidney tubules by active transport. 8 of 9 Why does active transport require energy? The particles are being absorbed against a concentration gradient. 9 of 9
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