2.4.1 The Role of Enzymes

Question 1

Catalase Function

Answer 1

• Converts hydrogen peroxide to oxygen and water
• H2O2 is a toxic product of metabolic reactions

Question 2

Why is digestion done by extracellular enzymes

Answer 2

• Macromolecule too big to fit inside cells

Question 3

Amylase function

Answer 3

• Breaks down carbohydrates
• Hydrolyses starch into maltose
• Secreted by salivary glands and pancreas (for mouth and intestine digestion)

Question 4

What does trypsin do?

Answer 4

Breaks proteins down into peptides and amino acids