additional science aqa key words D 0.0 / 5 ? ScienceGCSEAQA Created by: SamCreated on: 15-03-13 22:41 Deceleration Change of velocity per second when an object slows down 1 of 15 Delocalised electron Bonding electron that is no longer associated with any one particular atom 2 of 15 Denatured Change the shape of an enzyme so that it can no longer speed up a reaction 3 of 15 Differentiate Specialise for a particular function 4 of 15 Diffusion The net movement of particles of a gas or a solute from an area of high concentration to an area of low concentration (along a concentration gradient) 5 of 15 Digestion Breaking down into small molecules by the digestive enzymes 6 of 15 Digestive juice The mixture of enzymes and other chemicals produced by the digestive system 7 of 15 Digestive system The organ system running from the mouth to the anus where food is digestive 8 of 15 Diode Electrical device that allows current flow in one direction only 9 of 15 Direct current Electric current in a circuit that is in one direction only 10 of 15 Directly proportional A graph will show this if the line of best fit is a straight line through the origin 11 of 15 DNA fingerprint Pattern produced by analysing the DNA which can be used to identify an individual 12 of 15 Dominant The characteristic that will show up in the offspring even if only one of the alleles is inherited 13 of 15 Dot and Cross diagram A drawing to show the arrangement of the outer shell electrons only of the atoms or ions in a substance 14 of 15 Drag force A force opposing the motion of an object due to fluid (e.g air) flowing past the object as it moves 15 of 15
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