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Biology

GCSE

What is a reflex action and along which pathway does it travel in the nervous system?

A reflex action is an automatic rapid involuntary response, which acts to protect the body from damage. Such as when you touch something extremely hot, you involuntarily remove your hand from the hot o...

Answered by Isobel R. • Biology tutor

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What is an enzyme?

An enzyme is known as a biological catalyst. This is because they can speed up reactions by providing an alternative pathway, lowering the activation energy of the reaction. They are normally composed ...

Answered by Liam M. • Biology tutor

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Please explain Mitosis

Background knowledge

DNA - carry the genetic code that determines characteristics of an organism

Chromosomes - made...

Answered by Jacob C. • Biology tutor

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Why is the heart known as a double pump?

The heart is known as a double pump becasue each half pumps blood around a different circulation system. The right side pumps blood to the lungs, while the left side pumps blood around the body.

Answered by David H. • Biology tutor

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