Core Principles

Revision of part of the core principles module for AQA A level Biology spec B.
What E is the movement of substances into or out of an organisms body?. What D is the mechanism by which gases are exchanged in mammals, fish and plants?. What C is the mechanism which ensures efficient exchange in fish?. What M is the layer in a leaf which contains air spaces and irregular cells to enable diffusion?. What L is the structures which gills are made up of?. What B is the name of the mouth of a fish?. What F is the type of cells found lining the alveoli to give them thin walls?. What V is the process by which air is moved into and out of the lungs?. What D is the muscle controlling pressure in the thorax?. What C is another name for an enzyme?. What S is the name for a molecule which forms a complex with an enzyme?. What G is the type of protein an enzyme is?. What A is the minimum amount of energy needed for a reaction to occur?. What H is the type of bonds broken if enzymes are heated above 40 degrees?. What C is altered within an enzyme if the pH changes?. What A is the part of an enzyme which binds to the substrate?. What I is a chemical which reduces the rate of an enzyme controlled reaction?. What E is digestion which takes place when an organism secretes enzymes on surrounding material?. What M is a layer of the gut wall which is thick in the oesophagus to withstand abrasion from food?. What E is an enzyme which breaks long polypeptide chains into shorter ones?.
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