Classification of Enzymes

Question 1

Classification of
enzymes

Answer 1

1. Oxidoreductase
2. Transferases
3. Hydrolases
4. Lyases
5. Isomerases
6. Ligases

Question 2

catalyze the oxidation – reduction reactions between two
substrates.

Answer 2

Oxidoreductase

Question 3

It is the removal and addition of electrons

Answer 3

Oxidoreductase

Question 3

Co factors of Oxidoreductase

Answer 3

NAD or NADP

Question 4

Examples of Oxidoreductase

Answer 4

1. NAD oxidoreductase
2. Lactate Dehydrogenase
3. Glucose 6 phosphate dehydrogenase
4. Glutathione Peroxidase

Question 5

catalyze the transfer of certain groups such as phosphate, amino or
acetyl groups from one substrate to another.

Answer 5

Transferases

Question 6

Example of Transferases

Answer 6

1. ALT an AST
2. Creatinine kinase
3. Hexokinase

Question 7

Catalyze the hydrolysis of substrates.
Splitting the molecules by addition of water.

Answer 7

Hydrolases

Question 8

Example of Hydrolases

Answer 8

1. Lipase
2. Urease
3. Glycosidase.
4. Esterase (ACP, ALP)
5. Peptidases (Trypsin, pepsin)

Question 9

catalyze the addition or elimination of groups from substrate without
the aid of water or hydrolysis. The product contains double bond

Answer 9

Lyases

Question 10

Example of Lyases

Answer 10

1. Glutamate decarboxylase
2. Aldolase
3. Pyruvate decarboxylase

Question 11

inter-conversion of isomers such as optical, geometrical or positional
isomers.
Intermolecular rearrangement of substrate.

Answer 11

Isomerases

Question 12

Example of Isomerases

Answer 12

1. Glucose phosphate isomerase

Question 13

They link two substrates together with the utilization of ATP or
GTP.

Answer 13

Ligase

Question 14

Example of Ligase

Answer 14

DNA Ligase