Chapter 6

Front 1

cataysts are effective because they

Back 1

decrease the activation energy of a reaction

Front 2

During the formation of a blood clot, thrombin converts the soluble protein fibrinogen
into insoluble fibrin threads by cleaving several peptide bonds. This process is an
example of

Back 2

zymogen activation

Front 3

which of the following is a coenzyme

Back 3

NADP+

Front 4

alcohol dehydrogenase without NAD+ is called

Back 4

apoenzyme

Front 5

the term synthetase is included in which class of enzymes

Back 5

ligases

Front 6

which of the following is not a type of oxidoreductase

Back 6

peptidase

Front 7

which of the following classes of enzymes catalyze reactions involving the cleavage of bonds by the addition of water

Back 7

hydrolase

Front 8

the expression of the michaelis constant is equal to

Back 8

(K2+K3)/K1

Where
K1 = the rate constant for ES formation
K2 = the rate constant for ES dissociation
K3 = the rate constant for product formation

Front 9

specific activity is defined as

Back 9

the number of I.U per mg. of protein

Front 10

in the lineweaver-burk double reciprocal plot, the slope is equal to

Back 10

Km/Vmax

Front 11

in competitive inhibition, increasing the concentration of substrate

Back 11

increases the overall rate of the reaction

Front 12

which of the following amino acids is capable of acting as a general acid or general base at physio pH

Back 12

Histidine

Front 13

which of the following amino acids is capable of participating in covalent catalysis

Back 13

serine and histidine

Front 14

which of the following is a feature of transition metals that makes them efficient cofactors

Back 14

all of the above

Front 15

NADPH and NADH are coenzymes found in which class of enzymes

Back 15

dehydrogenases

Front 16

which of the following is not present in the active site of alcohol dehydrogenase

Back 16

Proline

Front 17

enzyme control is accomplished in which of the following ways

Back 17

genetic control

covalent modification

allosteric modification

compartmentalization

Front 18

zymogens are a feature of what type of enzymatic control

Back 18

covalent modification

Front 19

positive cooperativity is a feature of what type of enzymatic control

Back 19

allosteric regulation

Front 20

segregation of biochemical pathways into different organelles is an example of which type of enzymatic regulation

Back 20

compartmentation