Describe the process of inspiration (inhaling).

Describe the process of expiration (exhaling).

What is the composition of gases in inhaled air?

What is the composition of gases in exhaled air?

Why is digestion needed?

What is an enzyme?

Describe the function of enzymes' action (lock and key hypothesis).

What 3 factors affect enzyme activity?

What does optimum temperature mean?

What does optimum pH mean?

What enzyme breaks down fats?

What are fats broken down into?

What enzyme breaks down proteins?

What are proteins broken down into?

What enzyme breaks down carbohydrates?

What are carbohydrates broken down into?

What enzyme breaks down starch?

What is starch broken down into?

How would you test for the presence of starch?

How would you test for the presence of glucose?

How would you test for the presence of protein?

What is the role of the mouth?

What is the role of the stomach?

What is the role of the pancreas?

What is the role of the small intestine?

What is the role of the large intestine?

What is the role of the liver?

Why is bile required?

How is food moved along the alimentary canal (through the digestive system)?

How is the small intestine adapted to absorb soluble subtances into the blood stream?

How does the body use fatty acids and glycerol?

How does the body use glucose?

How does the body use amino acids?