Enzymes Flashcards
1
Q
Define enzymes
A
Proteins that function as biological catalysts
2
Q
What are catalysts?
A
Speed up reactions
3
Q
What is the chemical that is broken down in a reaction?
A
A substrate
4
Q
Lock and key theory
A
The substrate fits into the enzyme’s active site, and can only specifically fit into each other
5
Q
Catabolic enzymes
A
Break down substrates into smaller products
Eg, amylase and lipase
6
Q
Anabolic enzymes
A
Build up substrates into larger products
Eg, photosynthesis and protein synthesis
7
Q
Factors affecting enzyme activity
A
- Temperature
- pH
- Enzyme concentration
- Substrate concentration
8
Q
Denatured enzymes
A
High temperatures or extremes of pH completely change the shape of the active site, and the enzyme stops working
