Paper 1: Enzymes Flashcards
1
Q
What are enzymes?
A
Biological catalysts
2
Q
What do catalysts control?
A
reactions in the body
3
Q
What is each enzyme specific to?
A
Its substrate
4
Q
What are enzymes affected by?
A
Temperature
Substrate concentration
PH
5
Q
What happens to molecular at lower temperatures?
A
They move slower
Substrate molecules take longer to fit into and react in the active site
6
Q
What is happening to the enzyme at optimum temperature?
A
The enzyme is working at its fastest rate
7
Q
What happened to the active site at higher temperatures?
A
It changed shape
8
Q
What happens when the activate site changes shape?
A
Active site can’t hold the substrate as tightly so the reaction goes more slowly
9
Q
What happens at very high temperature?
A
The active site breaks up and the enzyme is denatured
