Top answers

Biology
A Level

In a DNA molecule 28% of all bases found were Adenine. What are the remaining bases and their percentages in this molecule?

first remember your base pairs: Adenine binds to Thymine and then Cytosine binds to Guanine. So if 28% are Adenine then 28% must also be Thymine. 28+28= 56% so 100-56 gives you the remaining percentage wh...

Answered by John O. Biology tutor
18094 Views

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.

Answered by Hannan N. Biology tutor
11524 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...

Answered by Ben J. Biology tutor
2075 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
5995 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
2745 Views

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