Digestive System

Question 1

What is peristalsis ?

Answer 1

Several muscles contractions push food down oesophagus

Question 2

Where is protease produced ?

Answer 2

Pancreas

Question 3

Function of bile ?

Answer 3

Emulsify fats - breaks fat down to increase rate of digestion by lipase

Question 4

Function of fats ?

Answer 4

Energy store
Thermal insulation
Protects organs

Question 5

Function of pancreas ?

Answer 5

Produces enzymes such as protease and lipase

Question 6

Function of vitamin D in a balanced diet ?

Answer 6

Helps with absorption of calcium

Question 7

What is digestion ?

Answer 7

Breakdown of large molecules into small molecules

Question 8

Function of stomach ?

Answer 8

Produces protease

Produces hydrochloric acid which kills bacteria and digests food

Question 9

Function of duodenum (last part of intestine) ?

Answer 9

Last site of digestion for carbohydrates, proteins and fats

Question 10

What digests protein into amino acids

Answer 10

Proteases

Question 11

Where is maltase produced ?

Answer 11

Small intestine

Question 12

Function of colon ?

Answer 12

Absorbs water into blood

Question 13

Function of vitamin A in a balanced diet ?

Answer 13

Used to make rod cells in retina

Question 14

What is in saliva ?

Answer 14

Amylase - breaks down starch

Question 15

Where is bile made and stored ?

Answer 15

Made in liver

Stored in gall bladder

Question 16

Word equation for photosynthesis

Answer 16

Carbon dioxide + water —> glucose + oxygen

Question 17

What disease is caused by lack of iron ?

Answer 17

Anaemia

Question 18

Function of vitamin C ?

Answer 18

Help absorb protein = holds organs and tissues together

Question 19

Where is amylase produced ?

Answer 19

Salivary glands and pancreas

Question 20

Function of calcium ?

Answer 20

Used to make bones

Question 21

Function of the ileum ?

Answer 21

Absorption of small molecules into the blood stream

Question 22

What enzyme digests starch to maltose ?

Answer 22

Amylase

Question 23

How is the ileum specialised for absorption?

Answer 23

One cell thick - short diffusion distance
Villi on ileum wall - increase surface area
Capillaries in villi - maintain high concentration gradient

Question 24

What enzyme digests maltose to glucose ?

Answer 24

Maltase

Question 25

Function of iron ?

Answer 25

Help produce haemoglobin

Question 26

Where is lipase produced ?

Answer 26

Pancreas

Question 27

What enzymes digest fats to fatty acids and glycerol ?

Answer 27

Lipase