Enzymes

Question 1

What are enzymes? (5 points)

Answer 1

• they are proteins
• they are biological catalysts (speed up reactions)
• they are specific to one particular substrate
• they are affected by temperature and pH
• they are not used up in the reaction they catalyse.

Question 2

How do enzymes work? (4 steps)

Answer 2

• The shape of enzyme’s active site is compEmentary to the shape of one particular substrate.
• The two bind together to form an enzyme-substrate complex.
• The reaction between them takes place rapidly.
• The products are released from the enzyme’s active site.

Question 3

What do enzymes contain?

Answer 3

They contain active site that complements substrate