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A mutation is any change to the base sequence of DNA. The different types of mutations that can occur include: Subsitution - this is where one base is swapped for another Deletion - one or more bases are rem...

Endosymbiosis is where two organisms live together, one inside the other: endo=in, sym=together and biosis=living. It is believed that mitochondria originated as eubacteria that were intracellular parasites ...

The cell membrane is made up of something called the phospholipid bilayer. This is exactly what it sounds like:a hydrophilic phosphate head on the outside and a hydrophobic lipid on the inside. They form a b...

A synapse is a junction between the end of one neuron (known as the pre-synaptic neuron ) and either another neuron (known as the post-synaptic neuron ) or another tissue such as muscle (such as at the neuro...

Evolution is a gradual change in the inherited traits of a population over many generations. Natural selection is a mechanism where the members of a population best suited to their environment have the best ...