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The human circulatory system consists of the heart - a pump and a series of tubes - the blood vessels containing the blood. There is an atrium and a ventricle on each side of the heart and the two sides c...

Antibiotics are used for killing bacteria and therefore, it can act as a selection pressure. This means that the bacteria can mutate, in order to avoid being killed and this would be a favourable mutation...

1. Mutations changes triplets/codons after that point and causes a frame shift

2. Changes amino acid sequence after this as it codes for different amino acids 

3. Affe...

1. In myelinated axons, there is action potential/depolarisation only at the nodes.

2. In myelinated axons, the nerve impulses jump from node to node, therefore there is saltatory co...

This question is an example of the 'suggest' questions that are asked. 'The hole is due to the failure of the foramen ovale to close. As a result, oxygenated blood from the left ventricle mixes with deoxy...