Top answers

What are the causes of genetic mutations ?

Muataions within genes can be caused by several ways. Sometimes they can be spontaneous or other times they can be induced by environmental factors. These factors can include chemicals such as chemicals foun...
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Answered by Amy M. • Biology tutor
4372 Views

What is the best way to revise?

A high grade in GCSE Biology requires you jumping through a few hoops. For certain questions, specific facts are required in the answer and certain structures are required for the answers. There isn't too mu...
DB
Answered by Darcey B. • Biology tutor
3069 Views

How is blood pumped around the body through the heart?

Blood goes into the atria of the heart and the atria contract and force blood into the ventricles. The ventricles then contract and force the blood out of the heart. There are valves in the heart which ensur...
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Answered by Lucy W. • Biology tutor
5294 Views

What conditions increase the likelihood of fossilisation?

Cold and low oxygen - minimises likelihood of organisms decaying
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Answered by Katrina T. • Biology tutor
4808 Views

How can you stop a cell culture from becoming contaminated?

Sterilising petri dishes and agar before use. Taping lid of petri dish whilst microbes are glowing. Sterilising innoculating loops before use.Carry out experiment near bunsen burner for updraft.
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Answered by Iona H. • Biology tutor
4242 Views