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Anti-diuretic hormone (ADH) is produced by the hypothalamus and stored in the posterior pituitary gland. When the hypothalamus identifies the bloods osmotic pressure as being outside the homeostatic range...

The two antiparallel strands of DNA are held together by hydrogen bonds joining the bases of each complementary nucleotide; Adenine is held to Thymine by 2 hydrogen bonds, and Guanine to Cytosine by 3 hyd...

Myelinated and non-myelinated neurones have different structures which is why the speed of action potentials differ. In a Myelinated neurone, a myelin sheath is wrapped around the axon. This myelin sheath...

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a selectively permeable membrane.

An enzyme is a type of protein, and proteins are made up of amino acids. The sequence of amino acids determines the shape of the enzyme, which in turns controls which substrates will or won't fit into the...