types of digestion

Question 1

six basic activities of digestive system

Answer 1

1. ingestion of food and water
2. mechanical digestion of food
3. chemical digestion for food
4. movement of food along alimentary canal
5. absorption of digested food and water into blood and lymph
6. elimination of material that is not absorbed

Question 2

mechanical digestion
- process
- aim

Answer 2

the psychical breakdown of food particles, involves processes in the teeth, stomach, gall bladder, oesophagus
aim: break down food into smaller pieces so that the total surface area increases- allowing for more effective chemical disgestn

Question 3

chemical digestion
- process
- how is it achieved

Answer 3

chemicals break down large, complex molecules into smaller, simple molecules that are now small enough ti be absorbed into blood stream
- achieved by enzymes

Question 4

chemical digestion of carbohydrates

Answer 4

starch gylcogen
> salivary amylase breaks down into
DISACCHARIDES: maltose, sucrose, lactose
> maltase breaks maltose into MONOSACCHARIDES 2 glucose
> sucrase breaks down sucrose into MONOSACCHARIDES 1 glucose and 1 fructose
> lactase breaks down lactose into MONOSACCHARIDES 1 glucose and 1 galactose