GCSE Digestive System

Question 1

What does amylase break down?

Answer 1

Starch into glucose

Question 2

What does protease break down?

Answer 2

protein into amino acids

Question 3

What does lipase break down?

Answer 3

Lipids into fatty acids and glycerol

Question 4

Where is amylase produced?

Answer 4

Salivary glands, pancreas, small intestine

Question 5

Where is protease produced?

Answer 5

Stomach, pancreas, small intestine

Question 6

Where is lipase produced?

Answer 6

Pancreas & small intestine

Question 7

What is the function of bile?

Answer 7

Emulsifies lipids

Question 8

What is the function of HCl in the stomach?

Answer 8

Kills pathogens, gives optimal pH for enzymes

Question 9

What is an enzyme?

Answer 9

A biological catalyst

Question 10

What is a substrate?

Answer 10

The substance an enzyme acts upon

Question 11

What are the two jobs enzymes carry out in the digestive system?

Answer 11

Catabolic (breaks down) and anabolic (puts together) reactions

Question 12

What is an enzyme-substrate complex?

Answer 12

When the substance binds to the enzyme’s active site

Question 13

What must substrates be to fit into an enzyme’s active site?

Answer 13

Complimentary

Question 14

What does specificity mean?

Answer 14

Enzymes can only catalyse one type of reaction

Question 15

What is the lock and key mechanism?

Answer 15

When the substrate fits into the active site

Question 16

Which part of the digestive system absorbs water?

Answer 16

Large intestine

Question 17

What does the small intestine (duodenum) digest?

Answer 17

Lipids, starch and protein

Question 18

Which part of the digestive system absorbs food into the blood?

Answer 18

Small intestine (ileum)