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Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of a cell.

This question, from an AQA past paper, is worth 6 marks and it is asking for you to describe the process of transcription - you do not have to explain or say why things happen. You should make 6 clear points...
TM
Answered by Tessa M. • Biology tutor
3091 Views

Name 3 possible functions for a membrane protein, and name an example for each.

Enzymatic activity. E.g. ATP synthase found in the inner mitochondrial membrane catalyses the synthesis of ATP. 2) Transport of substances. E.g. Aquaporins are integral membrane proteins that are assembled i...
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Answered by Celia N. • Biology tutor
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How does a stimulus produce an action potential?

The cell begins at a resting potential of -85mV with a high concentration of potassium (K+) inside the cell. The stimulus must be strong enough to produce the all or nothing response which triggers the openi...
MT
Answered by Meirion T. • Biology tutor
3702 Views

In to which artery does blood normally flow from the left ventricle?

The aorta.
JT
Answered by Jake T. • Biology tutor
2752 Views

Can explain the process of polypeptide synthesis in the cell?

Protein synthesis is known as the central dogma of biology, it is the reason our cells and hence our bodies can function. It is the conversion of DNA bases (A,T,G,C) intro an intermediary form called RNA (U,...
ZM
Answered by Zak M. • Biology tutor
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