Biology 0.0 / 5 ? BiologyActive transportGCSEAQA Created by: cconroyCreated on: 18-01-19 19:08 What does active transport also allow? sugar molecules to be absored from lower concentrations in the gut into the blood, which has a higher concentration. 1 of 13 A person opens a bottle of perfume. Why do people in the room smell it faster on a warm day? because the temperature affects the rate of diffusion. 2 of 13 What is a contact force? the objects are actually touching, eg. 2 people pulling against each other. 3 of 13 What is a non-contact force? the objects are not touching, eg. the force of gravity acts even when the objects are not touching. 4 of 13 Formula for weight? weight= mass x gravitational field strength. 5 of 13 What is a resultant force? when more than one force acts on an object. 6 of 13 What does work mean? energy transferred by a force. 7 of 13 Formula for work done? work done = force x distnace moved in teh direction 8 of 13 What does joules mean? the unit or energy, written as j 9 of 13 What does power mean? the energy transferred each second, measured in watts (w) 10 of 13 Formula for power? power = work done/ time taken. 11 of 13 What does watt mean? the unit of power. 12 of 13 What does effiency mean? the fraction of the energy supplied to a device which is transferred in a useful from. 13 of 13
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