Search over 10,000 free study notes

Arteries - carry blood at high pressure away from the heart. Their narrow lumen and thick, muscular wall allows them to do this effectively. The elastic, muscular wall allows for expansion and relaxation ...

Like charges repel and different charges attract, i.e. charges feel an electromagnetic (EM) force. Electrons (fundamental particles that 'orbit' around the nuclei of atoms) carry a negati...

In order to solve these simultaneous equations we first want to eliminate one of the variables (x or y) and find a solution to the variable remaining (y or x) and then use this solution to find the second...

Worth four marks
Enzymes are biological catalysts which are used in reactions. A reaction will typically involve an enzyme and a substrate. Enzymes a...

Classical conditioning refers to a type of learning in which a biologically reactive stimulus is paired with a stimulus which was previously neutral. The result of this process is learning a response to a...