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Enzymes and Inorganic Catalysts

A non-protein...

Question

A non-proteinaceous enzyme is:

A

Ligase

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B

Deoxyribonuclease

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C

Lysozyme

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D

Ribozyme

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Solution

The correct option is D
Ribozyme

Most enzymes are proteins. Ribozymes (ribonucleic acid enzymes) are RNA molecules that are capable of catalyzing specific biochemical reactions, similar to the action of protein enzymes.

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Q. Assertion :Ribozymes are RNA molecules which catalyse the synthesis of certain specific RNAs and removal of introns from mRNA. Reason: Ribozymes are proteinaceous enzymes.

Q. Match the enzyme in column I with its function in column II and choose the correct option.

Column I	Column II
A. $β$ -galactosidase	$1$ . Joining of DNA fragments
B. Permease	$2$ . Peptide bond formation
C. Ligase	$3$ . Hydrolysis of lactose
D. Ribozyme	$4$ . Increases permeability to $β$ -galactosidase

Q. Lysozyme is a special enzyme which helps kill microbes.

Q. The non-proteinaceous substance, which certain enzymes require for their activity are called

Q. Non-proteinaceous enzyme that acts as a catalyst for the formation of peptide bond is
OR
"All enzymes are proteins." This statement is now modified because an apparent exception to this biological truth is

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