Quiz on Enzymes and Their Classification

What is the main function of oxidoreductases?

• Catalyze the rearrangement of atoms

• Catalyze hydrolysis reactions

• Catalyze the transfer of electrons or protons

• Catalyze the formation of new chemical bonds

Which enzyme class is responsible for transferring functional groups?

• Lyase

• Isomerase

• Hydrolase

• Transferase

What type of reaction do hydrolases catalyze?

• Formation of double bonds

• Addition of water to break bonds

• Transfer of electrons

• Rearrangement of atoms

Which of the following is an example of a lyase?

• Amylase

• Pyruvate decarboxylase

• Hexokinase

• Lipase

What is the role of isomerases?

• Catalyze hydrolysis reactions

• Catalyze the formation of new bonds

• Catalyze the rearrangement of atoms within a molecule

• Catalyze the transfer of electrons

Which enzyme class uses ATP as an energy source?

• Ligase

• Oxidoreductase

• Transferase

• Hydrolase

What is the classification system recommended by the IUB?

• A system based on enzyme size

• A system based on enzyme temperature

• A system based on enzyme color

• A systematic naming system for enzymes

Which of the following enzymes is a transferase?

• Glycogen phosphorylase

• Sucrase

• Aldolase

• Lipase

What type of reaction do ligases catalyze?

• Hydrolysis

• Formation of new chemical bonds

• Isomerization

• Oxidation and reduction

Which enzyme is involved in the hydrolysis of sucrose?

• DNA ligase

• Hexokinase

• Sucrase

• Amylase