Properties of enzymes

Question 1

What is enzyme nomenclature?

Answer 1

The system used to name enzymes based on their function or the reaction they catalyze.

Enzyme names typically include the substrate and the type of reaction.

Question 2

Which enzymes are involved in detoxifying hydrogen peroxide?

Answer 2

Catalase and peroxidase.

Catalase converts hydrogen peroxide into water and oxygen, while peroxidase reduces it using other substrates.

Question 3

Which enzyme detoxifies superoxide anion?

Answer 3

Superoxide dismutase (SOD).

SOD catalyzes the dismutation of superoxide into oxygen and hydrogen peroxide.

Question 4

Fill in the blank: The enzyme that converts hydrogen peroxide into water and oxygen is called _______.

Answer 4

Catalase

Question 5

True or False: All enzymes are proteins.

Answer 5

False

Some enzymes are ribozymes, which are RNA molecules with catalytic activity.

Question 6

What is the role of superoxide dismutase?

Answer 6

To catalyze the conversion of superoxide anion into oxygen and hydrogen peroxide.

SOD is crucial for protecting cells from oxidative damage.

Question 7

List two properties of enzymes.

Answer 7

• Specificity
• Catalytic efficiency

Enzymes are specific to their substrates and can increase reaction rates significantly.

Question 8

Fill in the blank: The enzyme that helps in the reduction of hydrogen peroxide using other substrates is called _______.

Answer 8

Peroxidase