3.3.3.1 Digestion and its system Flashcards
1
Q
What is digestion?
A
Digestion is the process where large molecules get broken down into smaller molecules which can move through cell membranes
2
Q
What are the two stages of digestion?
A
- Physical breakdown
- Chemical digestion
3
Q
What is physical breakdown?
A
Large food is broken into smaller pieces by the teeth. Which gives food a large SA for chemical digestion
4
Q
What is chemical digestion?
A
The hydrolysis of large insoluble molecules into smaller soluble molecules by enzyme action.
5
Q
What are the three main enzymes groups?
A
Carbohydrases
Proteases
Lipases
6
Q
What is the oesophagus?
A
Long tube that carries food from the mouth to the stomach
7
Q
What is the stomach?
A
Muscular sac with an inner layer that produces enzymes
8
Q
A
