B3 - Organisation and the Digestive System Flashcards
1
Q
Name the two types of digestion
A
Mechanical (chewing) and chemical (enzymes)
2
Q
What are enzymes?
A
Biological catalysts which speed up a reaction without being used up
3
Q
Talk through the lock and key model
A
Each enzyme has an active site with a specific shape so that the substrate fits in perfectly before a reaction takes place
4
Q
What are the two functions of an enzyme?
A
Digestion (breaking apart) and synthesis (bonding together)
5
Q
Substrates and products of carbohydrase (amylase)
A
Complex carbohydrates such as starch
Simple sugars such as glucose
6
Q
Substrates and products of protease
A
Proteins
Amino acids
7
Q
Substrates and products of lipase
A
Lipids
Glycerol and fatty acids
8
Q
What can cause denaturing?
A
Too high temperature or non-optimum pH
