enzymology

Question 1

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Enzymes are

Answer 1

biological catalysts that mediate a series of biochemical reactions

Question 2

enzymes

Answer 2

They increase the rate of chemical reactions taking place within the cells without
themselves undergoing any permanent chemical change

Question 3

substrate is

Answer 3

The substance upon which an enzyme acts, is called the substrate

Question 4

enzymes reactions are

Answer 4

Higher reaction rates:
Milder reaction conditions
Greater reaction specificity
Capacity for regulation

Question 5

enzymes are called by that name by

Answer 5

Frederick W. Kuhne

Question 6

isolated and crystallized urease

Answer 6

james sumner

Question 7

all enzymes are proteins by

Answer 7

james sumner

Question 8

chaarcters of enzymes

Answer 8

proteins .
heat labile
water soluble
conatin 16%weight as nitrogen

Question 9

catalytic activity of [proteins is by its

Answer 9

quaternary structure

Question 10

cofactors

Answer 10

cofactors which are either one or more inorganic ions like Fe2+, Mg2+,
Mn2+ or Zn2+

Question 11

coenzyme

Answer 11

or a complex organic or metal organic molecule called a coenzyme.
Coenzymes are often derived from vitamins

Question 12

non protein part of an enzyme

Answer 12

prosthetic group

Question 13

The prosthetic group that is tightly bound to the enzyme protein is called

Answer 13

coenzyme

Question 14

coenzyme is heat

Answer 14

stable

Question 15

protein part of an enzyme is called

Answer 15

apoenzyme

Question 16

holoenzyme

Answer 16

complete, catalytically active enzyme together with its bound coenzyme / metal
ion is called a holoenzyme

Question 17

features of coenzyme

Answer 17

low molecular weight
heat stable
combine loosely with enzyme molecules
coenzymes are derivative of vit b complex

Question 18

precursor of co enzyme A

Answer 18

pantothenic acid

Question 19

functional group of co A

Answer 19

acyl group

Question 20

cofactors

Answer 20

ollective term for metal ions and coenzymes

Question 21

cytochrome oxidase inorganic cofactor

Answer 21

cu 2+

Fe 2+

Question 22

hexokinase inorganic cofactor

Answer 22

mg 2+

Question 23

hexokinase inorganic cofactor

Answer 23

mg 2+