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A gap between neurones where the impulse is transmitted chemically and triggers a new impulse in the nest neurone.

Ovaries.

A biological catalyst used to increase or decrease the rate of reaction.

Graphite is a mineral whose molecular structure is made up of carbon atoms. A carbon atom can bind up to 4 other atoms around it (it has 4 electrons in its outer-most shell which it can share with other atom...

Alleles are different forms of the same gene which are located on the same part of the chromosome. Genes are made up of information needed to produce different proteins, so alleles carry information to produ...