B2.1.5 - Bacteria and Enzymes in Digestion

Question 1

Where in the digestive system are bacteria found?

Answer 1

Large intestine

Question 2

Why are the bacteria in your digestive system important?

Answer 2

They make important vitamins such as vitamin K

Question 3

Food that contain ‘good bacteria’ are called…

Answer 3

probiotics

Question 4

Digestive juices contain special protein molecules called…

Answer 4

enzymes

Question 5

What is the definition of a digestive enzyme?

Answer 5

A biological catalyst that speeds up digestion without being used up.

Question 6

Enzymes always end in which letters?

Answer 6

‘-ase’

Question 7

How do enzymes speed up digestion?

Answer 7

They break down large molecules into small molecules.

Question 8

Which enzyme breaks down carbohydrates?

Answer 8

Carbohydrase

Question 9

Which enzyme breaks down protein?

Answer 9

Protease

Question 10

Which enzyme breaks down lipids?

Answer 10

Lipase

Question 11

Carbohydrates are broken down by carbohydrase into…

Answer 11

sugars

Question 12

Proteins are broken down by protease into…

Answer 12

amino acids

Question 13

Lipids are broken down by lipase into…

Answer 13

glycerol + fatty acids

Question 14

Which type of nutrient is starch and which enzyme will break it down?

Answer 14

Starch is a carbohydrate so carbohydrase.

Question 15

Starch is found in…

Answer 15

bread

Question 16

Where in the digestive system are carbohydrates broken down by carbohydrase?

Answer 16

Mouth
Small intestine

Question 17

Where in the digestive system are proteins broken down by protease?

Answer 17

Stomach
Small intestine

Question 18

Where in the digestive system are lipids broken down by lipase?

Answer 18

Small intestine

Question 19

What else helps lipase to digest lipids?

Answer 19

Bile

Question 20

Where is bile produced?

Answer 20

In the liver

Question 21

How does bile help lipase to digest lipids?

Answer 21

It break lipids into small droplets that are easier for lipase enzymes to work on.