Enzymes

Question 1

Active site

Answer 1

-Indented area on the surface of an enzymes molecule, with a shape that is complementary to the shape of the substrate molecule

Question 2

Catalyst

Answer 2

-Chemical that speeds up the rate of a reaction and remains unchanged and reusable at the end of the reaction

Question 3

Extracellular

Answer 3

-Outside the cell

Question 4

Intracellular

Answer 4

-Inside the cell

Question 5

Metabolic/metabolism

Answer 5

-the chemical reactions that take place inside living cells or organisms

Question 6

Product

Answer 6

-Molecule produced from the substrate molecules, by an enzyme-catalysed reaction

Question 7

Substrate

Answer 7

-Molecule that is altered by an enzyme-catalysed reaction

Question 8

What are enzymes?

Answer 8

-Biological catalysts that speed up metabolic reactions in living organisms

Question 9

What can a small number of catalysts do with substrates?

Answer 9

-Catalyse a large number of substrate molecules into products

Question 10

Turnover number

Answer 10

-The number of reactions that an enzyme molecule can catalyse per second

Question 11

Why are enzyme molecules good catalysts?

Answer 11

• Speed up metabolic reactions by up to 10 to the 12 times at lower temperatures than chemical catalysts
• Don’t need extreamly high pressure to function.