N5S3 - Catalysts and Enzymes - 1.9

Question 1

List 2 ways in which the rate of a chemical reaction can be sped up

Answer 1

The rate can be sped up by:

• increasing the temperature
• adding a catalyst

Question 2

What is a substrate and what is a product?

Answer 2

A substrate is the chemical(s) that enzymes act upon and a product is the chemical(s) produced by the action of an enzyme

Question 3

Define the active site of an enzyme

Answer 3

The part of an enzyme that one or more substrate molecules can attach to. It is a complementary shape to the substrate.

Question 4

Why are enzymes important to animals?

Answer 4

If the cellular reactions in the body happen to slowly, the cell may die. If the cell is part of a multicellular organism, this could harm the individual.

Question 5

What is the specific substrate and product(s) of Catalase?

Answer 5

• Substrate - Hydrogen Peroxide
• Products - Water + Oxygen

Question 6

What is the specific substrate and product(s) of Phosphorylase?

Answer 6

• Substrate - Glucose-1-Phosphate
• Products - Starch

Question 7

What is the specific substrate and product(s) of Amylase?

Answer 7

• Substrate - Starch
• Products - Maltose

Question 8

What is a enzyme-substrate complex form?

Answer 8

It is a temporary molecule formed when the substrate binds to the enzyme.