1
Q
digestive enzymes
A
speed up the conversion of large insoluble molecules into small soluble molecules that can be absorbed into the bloodstream
2
Q
“lock and key” theory
A
enzymes catalyse specific reactions in living organisms due to the shape of their active site
3
Q
temperature and pH on enzymes
A
- too high temperature/ pH or too low pH denatures the active site of the enzyme
- this means the enzyme doesn’t work
4
Q
carbohydrases
A
- made in salivary glands, pancreas and SI
- break down carbohydrates into simple sugars
5
Q
proteases
A
- made in the stomach and pancreas
- break down protein to amino acids
6
Q
lipases
A
- made in pancreas
- break down lipids to glycerol and fatty acids
7
Q
bile (not an enzyme)
A
- made in liver and stored in the gall bladder
- emulsifies lipids to increase surface area to increase rate of break down
- changes pH to neutral
8
Q
Benedicts’ test
A
- test for sugar (glucose)
- orange to brick red
9
Q
Iodine test
A
- test for starch
- turns black
GCSE Biology - Organisation
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