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Viruses are some of the smallest known organisms, and can cause serious disease in humans.A virus consists of a fragment of genetic material inside a protective protein coat. For a virus to survive and re...

Anti-biotic resistance is a growing problem for humans now, exacerbated by the overuse and over reliance on anti-biotics. Bacteria colonies have genetic variation amongst the individuals which means they ...

A synapse is the fluid filled gap between the presynaptic neuron and postsynaptic neuron. 1) An electrical impulse travels along an axon of the presynaptic neuron. 2) When the impulse reaches the nerve-en...

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

A synapse s a junction between two neurones. Neurotransmitters are relased from one neurone and diffuses across the synapse  to stimulate the next neurone.