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1. An action potential arriving at the pre-synaptic membrane stimulates voltage-gated calcium channels to open and calcium ions diffuse into the neuron through these calcium channe...

(using diagram of synapse between relay and motor neurone)

This is the relay neurone and this is the motor neurone, the gap in between the neurones is called the synapse. Information is passed from...

Type 1 diabetes mellitus occurs when the body's immune system attacks beta cells within the Islets of Langerhans, in the pancreas. The immune system recognises pancreatic self-antigens as foreign and begi...

Mitosis is a form of cell division that produces genetically identical cells and it includes 4 main stages. Before Mitosis can occur the cell undergoes Interphase, in which DNA and organelles are replicat...

Carbon-containing compounds in organic waste are broken down by microorganism for respiration, releasing CO2 to the atmosphere. This CO2 is taken in by plants for photosynthesis to produce glucose, to be ...