Enzymes Quiz

What is the primary function of enzymes in biological systems?

• To act as a source of energy

• To speed up chemical reactions

• To store genetic information

• To provide structural support

Enzymes are composed of which type of macromolecule?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

What is the active site of an enzyme?

• The location where substrate molecules bind

• The part of the enzyme that is not involved in the reaction

• The area where the enzyme is stored

• The part of the enzyme that gets consumed

Which of the following factors can affect enzyme activity?

• Temperature

• pH

• Substrate Concentration

• All of the above

What is a substrate in enzymatic reactions?

• The enzyme itself

• The reactant that an enzyme acts on

• A product of the reaction

• The inhibitor molecule

What is meant by enzyme specificity?

• Enzymes can react with any substrates

• Enzymes are specific to a particular substrate

• Enzymes change their shape to fit any substrate

• Enzymes are only active in specific conditions

Which of the following best describes a competitive inhibitor?

• It binds to the enzyme at a site other than the active site

• It competes with the substrate for binding at the active site

• It increases the rate of the enzymatic reaction

• It is a product of the enzymatic reaction

What happens to an enzyme when it is denatured?

• It becomes more active

• Its structure is altered and it loses functionality

• It binds more efficiently to the substrate

• It catalyzes more reactions

What is the role of cofactors in enzyme activity?

• They are enzyme inhibitors

• They are necessary for the enzyme to function properly

• They are the substrate molecules

• They are the products of the reaction

Which of the following is an example of a coenzyme?

• Water

• ATP

• NAD+

• Glucose