Which of the following enzyme is not of protein origin?
A
Hexokinase
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B
Synthetase
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C
Endonuclease
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D
Ribozyme
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Solution
The correct option is D Ribozyme Enzymes are biological catalysts which catalyse the biochemical reactions in living systems. Majority of enzymes are proteins. A small minority of enzymes are catalytic RNA molecules. These catalytic RNA molecules are called ribozymes. These catalytic RNA molecules catalyze reactions like splicing of introns during processing of RNA in eukaryotic mRNA.