Question

The energy required to attain transition state is referred to as _____________

(a) Gibbs free energy

(b) Activation energy

(c) Standard free energy change

(d) pH

I had been asked this question in an international level competition.

I want to ask this question from Enzyme Kinetics topic in portion Enzyme Kinetics of Enzyme Technology

Answer 1

The correct answer is (b) Activation energy

Easy explanation: The key role of any enzyme is to act upon specific substrate and accelerate the reaction. For fastening of any reaction, the amino-acids side chain groups of the active site should properly interact with the substrate molecule and form a transition state. For attaining a transition state, the enzyme needs certain energy which is termed as activation energy (EA).