Introduction

Question 1

What are the three things do enzymes broadly do?

Answer 1

1. Control reactions in your body
2. Caretakers of cells
3. Maintain body chemistry at an optimal level

Question 2

What are 3 example of things enzymes broadly do?

Answer 2

Each enzyme usually performs one function, There are enzymes which:

1. Clear fat from your boodstream after dinner
2. Detect the level of glucose in the blood
3. Stop nerve impulses continally passing from one nerve to another

Question 3

What is the name given to the thousands of chemical reactions which occur in your body every second

Answer 3

Metabolism

Question 4

What is metabolism

Answer 4

The sum of all chemical reactions that occur in living organisms, including digestion and the transport of substances into and between different cells.

Question 5

How do enzymes control metabolism?

Answer 5

Enzymes determine when and how a reaction takes place

Question 6

What is the name given to an enzyme which can speed up the rate of metabolic reactions

Answer 6

• Catalyst

Question 7

What is a catalyst

Answer 7

• An enzyme which can speed up the rate of metabolic reactions

Question 8

What are the two types of metabolic reaction

Answer 8

1. A reaction where a larger molecule is broken down into a smaller molecule
   
   • e.g. Hydrogen peroxide is broken down into water and oxygen by the enzyme catalase
   • 2H₂O₂ → catalase → 2H₂O + O₂
2. A reaction where a small molecules builds into a larger more complex molecule
   
   • e.g. 2 amino acids combine to form a dipeptide following a condensation reaction

Question 9

Which of the following reactions

break down of build molecules

• Glycogen⇒Glucose molecules
• Protein from amino acid
• Starch ⇒ Maltose
• Urea from amonia and carbod dioxide

Answer 9

• Glycogen⇒Glucose molecules Break
• Protein from amino acid Build
• Starch ⇒ Maltose Break
• Urea from amonia and carbod dioxide Build