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A vector is any physical quantity which has a direction and a magnitude, whereas a scalar is a physical quantity that is not directional (magnitude only).

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...

We start by finding the determinant of this matrix using the cofactor method (I.e for each entry in the matrix, cross out the row and column in which it resides and find the determinant of the matrix form...

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...