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Why should we not overprescribe and overuse antibiotics?

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, a...
NR
Answered by Niva R. • Biology tutor
3649 Views

Mutations leads to the production of a non-functional protein. Explain why.

Mutations changes triplets/codons after that point and causes a frame shift Changes amino acid sequence after this as it codes for different amino acids Affects hydrogen/ionic/sulfur bonds but not peptide bo...
CH
Answered by Carmen H. • Biology tutor
15708 Views

A myelinated axon conducts impulses faster than a non-myelinated axon.

In myelinated axons, there is action potential/depolarisation only at the nodes. In myelinated axons, the nerve impulses jump from node to node, therefore there is saltatory conduction. In myelinated axons, ...
CH
Answered by Carmen H. • Biology tutor
6114 Views

Some babies are born with a hole between the right and the left ventricles. These babies are unable to get enough oxygen to their tissues. Suggest why.

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 deoxygen...
LH
Answered by Lamis H. • Biology tutor
11504 Views

How is blood glucose controlled in homeostasis?

Blood glucose concentration is controlled mainly by the pancreas. If there is a rise in blood glucose concentration the pancreas will detect this and the beta cells will secrete insulin. At the same time the...
AP
Answered by Anushri P. • Biology tutor
3956 Views