1.10 Enyzme Action Flashcards
The role of enzymes in living organisms How enzymes speed up reactions The lock and key model of enzyme action The induced-fit model of enzyme action
1
Q
What are enzymes?
A
Biological catalysts
2
Q
What type of protein are enzymes?
A
Globular proteins
3
Q
How do enzymes speed up reactions?
A
By lowering the activation energy
4
Q
What are intracellular enzymes?
A
Enzymes that act within the cells that produce them
5
Q
What are extracellular enzymes?
A
Enzymes that act outside the cells that produce them
6
Q
What determines the shape of an enzyme’s active site?
A
Its tertiary structure
7
Q
What is the lock and key model of enzyme action?
A
The substrate fits perfectly into the enzyme’s active site
8
Q
What is the induced fit model of enzyme action?
A
The active site changes shape slightly as the substrate enters
