Enzymes

Question 1

A type of enzyme that use oxygen as an electron acceptor but don’t incorporate it into the substrate :

Answer 1

Oxidase

Question 2

A type of enzyme that directly incorporates oxygen into the substrate :

Answer 2

Oxygenase

Question 3

A type of enzyme that transfers inorganic phosphate (Pi) to a substrate :

Answer 3

Phosphorylase

Question 4

A type of enzyme that transfers phosphate from ATP to substrate & vice versa :

Answer 4

Kinase

Question 5

A type of enzyme that removes (cleaves) phosphate from a substrate :

Answer 5

Phosphatase

Question 6

A type of enzyme that catalyze removal of a group from by a mechanism other than hydrolysis :

Answer 6

Lyase

Question 7

A type of enzyme that catalyze the joining of two substrates using energy :

Answer 7

Ligase

Question 8

Molecules that can bind non-covalently at sites on the enzyme other than active sites :

Answer 8

Allosteric modifiers / inhibitors

Question 9

A type of enzyme inhibition in which the end product of a series of metabolic reactions directly inhibits the first enzyme in the series :

Answer 9

Feedback inhibition

Question 10

A type of enzyme inhibition in which the end product of a series of metabolic reactions inhibits the gene controlling the synthesis of the first enzyme :

Answer 10

Feedback regulation

Question 11

Thermo-labile biological catalyst, proteins in nature, remain unchanged chemically during reactions & highly specific in their action :

Answer 11

Enzymes

Question 12

An enzyme which remove hydrogen from succinate :

Answer 12

Succinate dehydrogenase

Question 13

Name a simple protein enzyme :

Answer 13

Pepsin

Question 14

The protein part of a conjugated protein enzyme :

Answer 14

Apoenzyme

Question 15

Whole enzyme of conjugated protein enzyme called :

Answer 15

Haloenzyme

Question 16

Non-protein part of conjugated protein enzyme :

Answer 16

Prosthetic enzyme (firmly attached to the enzyme) ,
Coenzyme (loosely attached to the enzyme)

Question 17

Name the 4 coenzymes that acts as hydrogen carriers :

Answer 17

NAD (co I),
NADP (co II),
FMN,
FAD

Question 18

Nam the 2 specific competitive inhibitors :

Answer 18

Sulfonamide (Bacteriostatic),
Dicumarol (invivo anti-coagulant)

Question 19

Name the 3 specific non-competitive inhibitors :

Answer 19

Allosteric modifiers, Feedback inhibitor, Feedback regulator

Question 20

Name 2 esterase :

Answer 20

Lipid (Lipase), Nucleic acid (Nuclease)

Question 21

Name the 3 hydrolase :

Answer 21

Phosphatase, Esterase, Protease

Question 22

Name the competeive inhibitor that similar in structure to para amino benzoic amino acid used by microorganisms to synthesize folic acid :

Answer 22

Sulfonamide

Question 23

Name the competive inhibitor that similar in structure to vit K & used to prevent prothrombin synthesis & factors X,IX,VII by liver :

Answer 23

Dicumarol