MB - Enzymes Flashcards
1
Q
What is an enzyme?
A
One or more polypeptide chains forming a catalytic active site
2
Q
What is a substrate?
A
A molecule which binds to an active site and undergoes a chemical reaction
3
Q
What is an Anabolic reaction?
A
Smaller molecules –> Larger molecules
4
Q
What is a Catabolic reaction?
A
Larger molecules –> Smaller molecules
5
Q
What is the order of Enzyme commission numbers?
A
- Class
- Subclass
- Sub-subclass
- Serial Number
6
Q
What are the 2 main things which affect rate of reaction?
A
- Speed pf 1 reaction (rate constant, k)
- Number of reactions occurring
7
Q
What are some advantages of using enzymes? (4 things)
A
- Reusable
- Specific
- Efficient
- Controllable
8
Q
What is the structure of the active site?
A
- Contains a 3D arrangement of amino acids
- Contains binding and catalytic residues
- Source of substrate and reaction specificity
9
Q
What are the 2 models involving substrate specificity?
A
- Lock and Key
- Induced fit
10
Q
What is a catalytic triad?
A
A set of 3 amino acids that can be found in the active site of some enzymes
