Question

Which of the following statements about enzymes are true?

• A. Enzymes catalyse chemical reactions by increasing the activation energy
• B. Enzymes are highly specific both in binding chiral substrates and in catalysing their reactions
• C. Enzymes lack in nucleophilic groups
• D. Pepsin is proteolytic enzyme

Answer 1

Answer: (A)

Enzymes catalyse chemical reactions by increasing the activation energy

Answer 2

The correct answer is A:Enzymes catalyse chemical reactions by increasing the activation energy
a) Enzymes facilitate a chemical reaction by stabilizing the transition state, effectively reducing the energy required for activation.
b) Enzymes exhibit remarkable specificity when it comes to binding chiral substrates and catalyzing their respective reactions.
c) Enzymes are composed of protein molecules containing numerous functional groups such as $OH^-$ and $^-NH_2$, which can serve as nucleophiles.
d) Pepsin is an enzyme responsible for breaking down proteins through proteolysis.