Top answers

Biology
A Level

Describe a biochemical test that could be used to determine the presence of triglycerides in a sample of food.

Dissolve the sample in ethanol and then add water. The presence of triglycerides is confirmed by a white emulsion forming.

HN
Answered by Hannan N. Biology tutor
13165 Views

Why is genetic diversity decreased when populations are split off from one another?

This question is all about genetic diversity and more specifically how difference in alleles is what creates diversity within a population of a species. (here I would ask about whether the student underst...

BJ
Answered by Ben J. Biology tutor
2710 Views

How are enzymes involved in the process of DNA replication?

In order to break the hydrogen bonds connecting complementary base pairs, (G&C, T&A) in a double helix DNA strand, energy is required. In order to overcome this energy barrier there are enzymes in...

Answered by Biology tutor
7607 Views

What is the role of a myelin sheath in neurones?

The role of the myelin sheath is to speed up the conduction of an action potential along neurones. It's made up of Schwann cells that wrap around neurones, forming an insulating layer with gaps inbetween ...

Answered by Biology tutor
3562 Views

Describe DNA replication. Is this process conservative?

DNA Nucleotides are monomers which form phosphodiester bonds during a condensation reaction to become polymer stands. Two polymer strands twist together into a double helix to form the final DNA molecule ...

SS
Answered by Suvi S. Biology tutor
4165 Views

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