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Starch is a polysaccharide of alpha glucose. It is made up of amylose and amylopectin. It forms a branched structure to allow it to be compact, this is due to the fact it contains 1-4 and 1-6 glycosidic bonds.

ATP (Adenosine triphosphate) is a nucleotide derivative which is used to store energy to power most of the reactions in a cell. Reminder: Nucleotides are the five bases which make up DNA and RNA - Adenine, C...

When water levels are low in the blood, osmoreceptors in the hypothalamus detect this change and trigger the posterior pituitary gland to release a hormone called ADH. ADH binds to receptors on the cell memb...

The heartbeat is started at a specialised area of the right atrium, known as the sinoatrial node (SAN) ; the SAN sends out the waves of depolarisation, resulting in contraction of the cardiac muscle. These w...

This is because when an organism dies there is no source of ATP, without this source of ATP ant myosin heads attached to the actin binding site cannot detach therefore leaving the muscles in a contracted sta...