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This is a result of natural selection. Natural selection is the result of a barrier, physical such as the ocean or a volanco eruption. This barrier seperates members of a species. One genetic mutation occ...

Proteins are polymers (large molecules) of amino acids joined by peptide bonds. They are formed by condensation reactions, meaning water is a by-product of their formation, and there are different levels....

DNA replication is a semi-conservative process, which creates an identical replica of an already existing DNA double helix sequence. During DNA replication, the two antiparallel DNA strands are split in t...

In myelinated axons, the myelin sheath that surround the membrane prevents action potentials forming, hence depolarisation only occurs at the nodes of Ranvier (breaks in the sheath, exposing the membrane,...

The key distinguishing feature between saturated and unsaturated fatty acids is the presence of a double bond. This double bond, present only in unsaturated fatty acids, will mean there are less hydrogen ...