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What is an enzyme?

An enzyme is a protein that act as a biologcal catalyst, meaning that they will activate a biological reaction. 

Enzymes are very specific and will work with a specific substrate. You can think of an enzyme as a key and the substrate as a lock. Only the right combination will allow you to unlock the biological reaction. 

Laureen J. A Level Biology tutor, GCSE Biology tutor, Mentoring -Medi...

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