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Biology
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Describe the use of promoters in gene technology

Promoters switch genes on, if a gene is inserted into a bacterium it needs a promoter added to coordinate with the gene for the chanracteristic to be expressed.
For human insulin production in bacter...

Answered by Roslyn I. Biology tutor
6880 Views

Why is sucrose digested faster than starch?

Sucrose is digested faster than starch because the process only has one step: sucrose is digested to glucose by sucrase. However, the digestion of starch has two steps: starch is digested to maltose b...

Answered by Xinyi Q. Biology tutor
10670 Views

What is the process of natural selection?

- Differences in genes lead to variation within a species

- It is in an individuals' best interest to produce the maximum amount of offspring in order to have maximum variation in the genes of...

Answered by Bethany M. Biology tutor
4313 Views

What is a phagocyte?

Phagocytes are types of cells found in the bloodstream and tissue. They are an important part of the immune system. They recognise foreign antigens on invading pathogens and engulf them. They then dig...

Answered by Lucy G. Biology tutor
4449 Views

Why do nerve impulses travel faster in myelinated neurons?

The myelin sheath is a fatty layer made up of the hugely expanded plasma membrane of schwann cells which surround the axon of neurons. The axon is unprot...

Answered by Hannah T. Biology tutor
23960 Views

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