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Both DNA and RNA are molecules related to protein coding in a cell. The basic structure has a carbon sugar backbone with 4 different nitrogenous bases. In DNA there are two of these strands connected by ...

The phagosome containing the virus fuses with the lysosome, which then releases hydrolytic enzymes. These enzymes then destroy the virus, and the antigens from the virus are consequently incorporated into...

When an action potential reaches the end of one neurone, it cannot simply move to the next one as there is a gap (the synapse or synaptic cleft) between the two neurones. Instead, when th...

There are two types of cell called Eukaryotic cells and Prokaryotic cells. Eukaryotes are organisms made up of eukaryotic cells which include animals, plants and fungi (you can remember this as YOU are a ...

The heart made up of four chambers; two atria at the top and two ventricles at the bottom. There are effectively two pumps. The pump on the right side of the heart sends blood to the lungs to be oxygenate...