Question

Which enzyme shows greatest substrate specificity?

• A. Nuclease
• B. Trypsin
• C. Sucrase
• D. Pepsin

Answer 1

Answer: (C)

Sucrase

• Enzymes are highly specific catalysts and show high degree of substrate specificity.
• Some enzymes names are general and these enzymes act on a type of biomolecules. For example: nucleases mean enzymes acting on nucleic acids. Nuclease is a general class of enzymes.
• Similarly, pepsin and trypsin are protein metabolizing enzymes. These enzymes will act on any proteins and not on some specific protein.
• Sucrase is, however, a specific enzyme that will act on sucrose only.

So, the correct answer 'Sucrase'