A balanced diet
Digestive system
Mouth physical break dam
- chewing chemical break
down
-Enzymes(amylase) to break
dam carbohydrates.
Main nutrients
Carbohydrates
Proteins
Fats/lipids
Vitamins &
minerals
Roles
Energy storage
Growth& repair
Energy storage
To keep our body
Sources
Rich, bread
Meat, milk
Vegetable oil,
butter
Fruits& vegetables
Enzymes-Biological catalyses that speed up chemical
reactions in the body.
Oesophagus
-peristalsis (movement to pass
down the food to stomach)
Liver (produces bile)
Bile-to
breakdown fats
large intestines
reabsorb the
water
Stomach-contain hydrochloric acid
(prevents the bacterial infections
Small intestine -captain enzymes
(pepsin)to breakdown proteins
-absorb nutrients
Rectum-stores the
faeces
Anus-exit for faeces
Nutrients
Enzymes
Small molecules
Carbohydrates
Carbohydrase
Proteins
Protease
Sugar molecules
(glucose)
Amino acids
Fats/lipids
lipase
1 glycerol, 3 fatty
acids