Q. 16.36 - An Introduction to General, Organic, and Biological Chemistry

Question

Match the terms (1) active site, (2) lock-and-key model, and (3) induced-fit model with each of the following:

a. the portion of an enzyme where catalytic activity occurs

b. an active site that adapts to the shape of a substrate

c. an active site that has a rigid shape

Step-by-Step Solution

Answer

(Part a) (1) - (a) Active site is the portion of an enzyme where catalytic activity occurs.

(Part b) (3) - (b) According to induced - fit, the active site adopts the shape of a substrate.

(Part c) (2) - (c) According to lock and key model, active site has a rigid shape.

Step 1: Introduction (Part a)

• These are the molecules that act as the reactant or substrate.
• The active site is the area of the enzyme where the reactant binds. 
• This is the most important part of the enzyme and has a very specific shape.

Step 2:Given information(Part a)

Match the terms (1) active site, (2) lock-and-key model, and (3) induced-fit model with each of the following: 

Step 3: Explanation (Part a, Part b, Part c)

(a) (1) - (a) Active site is the portion of an enzyme where catalytic activity occurs.

(b) (3) - (b) According to induced - fit, the active site adopts the shape of a substrate.

(c) (2) - (c) According to lock and key model, active site has a rigid shape.