Biology- Transport across membranes Questions about diffusion, osmosis and active transport. 4.0 / 5 based on 2 ratings ? BiologyExchange of materialsGCSEEdexcel Created by: tasha_0803Created on: 16-01-15 18:33 A bigger concentration gradient does what to the rate of diffusion? Increases it. 1 of 8 Active transport uses energy from which process? Respiration. 2 of 8 Osmosis is the net movement of what type of molecules? Water molecules. 3 of 8 Diffusion transports particles from a low to high concentration- true or false? False- they travel from high to low down a concentration gradient. 4 of 8 In osmosis, water molecules travel from a high ______ to a low ________, fill in the blanks. High water potential, low water potential. 5 of 8 How does a large surface area to volume ratio affect transport across membranes? It increases the rate of transport. 6 of 8 How does a high temperature affect diffusion? It increases the rate of it as the particles have more kinetic energy. 7 of 8 Osmosis is the net movement of particles across a what? Partially/selectively permeable membrane. 8 of 8
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