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German 'agression', is repeatedly held up as the main reason for the outbreak of World War One. This is illustrated by the Schlieffen Plan of 1905-06 which aimed at annihilating armies on two fronts. Thou...

De-oxygenated blood in the body returns to the right atrium of the heart through the superior and inferior vena cava. This blood is pumped through to the right ventricle,...

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.