Digestion

Question 1

Digestion definition

Answer 1

The break down of large food molecules into smaller water soluble molecules

Question 2

Mouth

Answer 2

Chews food with teeth and swallows

Question 3

Salivary glands

Answer 3

Contains saliva with the enzyme carbohydrase

Question 4

Oesophagus

Answer 4

Tube that connects the mouth to the stomach

Question 5

Liver

Answer 5

Produces bile which breaks down large fat molecules into smaller droplets

Question 6

Gall bladder

Answer 6

Stores bile

Question 7

Stomach

Answer 7

Contains protease and hydrochloric acid to kill bacteria

Question 8

Pancreas

Answer 8

Produces carbohydrase , lipase and protease and releases them into the small intestine

Question 9

Small intestine

Answer 9

Where absorption of the food molecules into the bloodstream take place

Question 10

Large intestine

Answer 10

Water from the waste food is absorbed here

Question 11

Rectum

Answer 11

Where faeces is stored

Question 12

Anus

Answer 12

Where faeces leaves the body

Question 13

What do enzymes do

Answer 13

Break down large insoluble molecules into small soluble ones

Question 14

Substrate

Answer 14

The molecule that is being broken down

Question 15

Enzyme substrate complex

Answer 15

Forms when the substrate fits into the active site

Question 16

Active site

Answer 16

Dent in the enzyme where another molecule fits

Question 17

Carbohydrase (salivary amylase)

Answer 17

Found in salivary glands - substrates are starch - produce glucose - optimum ph 7

Question 18

Protease

Answer 18

Produced in pancreas/ stomach - substrates are protein - produces amino acids - optimum ph 1-3

Question 19

Carbohydrase (pancreatic amylase)

Answer 19

Found in pancreas or small intestine lining - substrates are starch - produces glucose - ph 7

Question 20

Lipase

Answer 20

Found in pancreas - substrates are fat - produces fatty acids and glycerol - ph 7

Question 21

Denature

Answer 21

When the active site of the enzyme changes so the substrate can no longer fit

Question 22

what effects enzyme action?

Answer 22

temperature and pH

Question 23

how does a high temperature effect an enzyme?

Answer 23

denatures the enzyme changing the shape of the active site

Question 24

how does the ph effect an enzyme?

Answer 24

changes the shape of the active site and make it work either very efficiently or not well at all