Chapter 3 Organisation And The Digestive System Flashcards
1
Q
What is the hierarchy of living organisms
A
Cells –> tissues –> organs –> organ sytems–> organisms
2
Q
What is a carbohydrate composed of
A
Long chains of simple sugars e.g glucose molecules
3
Q
What is a protein composed of
A
Chains of amino acids
4
Q
What are fats composed of
A
3 fatty acids and 1 glycerol molecule
5
Q
How do enzymes work
A
- Speed up rate of chemical reactions
- There are random collisions between the enzyme and the substrate molecule, when the
substrate enters the active site an enzyme - Bonds are broken
- Produce are released.
6
Q
What happen to enzymes when the temperature exceeds 40°C
A
enzyme starts to become denatured and no longer functions.
7
Q
Name the 3 types of enzme
A
Protease
Lipase
Carbohydrase
8
Q
Where the enzymes found
A
Stomac and pancreas
9
Q
Where do enzymes work
A
All work in the small intestine
10
Q
What does bile do
A
It neutralises stomach acid and emulsifies fats
