AP BIOLOGY

BIOCHEMISTRY

ENZYMES AND METABOLISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which best describes how the shape of an enzyme affects its function?
A
It determines the specific reaction it will catalyze
B
It determines the pH of a solution
C
It determines whether a reaction will be slowed or sped up
D
It determines the products that will result from the reaction
Explanation: 

Detailed explanation-1: -Yes, the shape of the enzyme is crucial to determining the function. Enzymes are specialized proteins that can either build up or break down reactants. The area of the enzyme where the substrate binds is specifically shaped to fit that substrate. If the enzyme is denatured, it cannot bind to the substrate.

Detailed explanation-2: -The proteins in enzymes are usually globular. The intra-and intermolecular bonds that hold proteins in their secondary and tertiary structures are disrupted by changes in temperature and pH. This affects shapes and so the catalytic activity of an enzyme is pH and temperature sensitive.

Detailed explanation-3: -Enzyme activity can be affected by a variety of factors, such as temperature, pH, and concentration. Enzymes work best within specific temperature and pH ranges, and sub-optimal conditions can cause an enzyme to lose its ability to bind to a substrate.

Detailed explanation-4: -Enzymes are folded in GLOBULAR SHAPES.

There is 1 question to complete.