2.1.4: Enzymes

Question 1

What are enzymes?

Answer 1

• Biological catalysts
• Globular proteins that interact with substrate molecules causing them to react at a much faster rate

Question 2

The chemical reactions required for growth are ——– reactions and ——————————-

Answer 2

The chemical reactions required for growth are anabolic (building up) reactions and are all catalysed by enzymes

Question 3

——– reactions release energy and are ———————

Answer 3

Catabolic reactions (breaking down) release energy and are ctalysed by enzymes

Question 4

What is metabolism

Answer 4

The sum of all of the different reactions and reaction pathways happening in a cell or an organism, and it can only happen as a result of the control and order imposed by enzymes.

Question 5

What is the V max

Answer 5

Enzymes can only increase the rates of reaction up to the V max.
This is the maximum initial velocity or rate of the enzyme-catalysed reaction.