1. Which of the following statements regarding catalytic efficiency is TRUE ? a)

Question

1. Which of the following statements regarding catalytic efficiency is TRUE?

a) It reflects both substrate binding and catalytic events

b) The quantitative measure is Km/kcat

c) It is the apparent first order rate constant of E + S

d) It increases with Km and decreases with kcat

2. At pH 4, how many charged groups are present in the pentapeptide ADHSL?

a) 1

b) 2

c) 3

d) 4

3. Due to the formation of hydrogen bonds, _______ is highly soluble in water.

a) hydrochloric acid

b) sodium chloride

c) methanol

d) octane

Explanation / Answer

Ans 1 Catalytic efficiency reflects both substrate binding and catalytic events in a enzyme catalysis as it is the ratio of kcat/km. It refers to the properties and reaction of free enzyme and free substrate. so the correct option is A

Ans 3 . Due to formation of hydrogen bonds hydrochloric acid is highly soluble in water as chlorine is most electronegative atom which can show a hydrogen bond formation with water. So the correct option is A

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