The active site of an enzyme is situated in its amino acids _________ .
A
Amino groups
B
Carboxyl groups
C
R-groups
D
All the above
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Solution
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The active site is the part of an enzyme to which substrates bind and where a reaction is catalyzed.
The active site of an enzyme is situated in its amino acid's R groups.
So, the correct option is 'R-groups'.
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