Enzyme Regulation

Question 1

Maintenance of appropriate concentration of substance in the internal environment

Answer 1

Homeostasis

Question 2

Regulation of proteins by binding an effector molecule at a site other than the proteins active site

Answer 2

Allosteric regulation

Question 3

Positive allosteric effector

Answer 3

Increases catalytic activity or activator

Question 4

Negative allosteric effector

Answer 4

Decrease catalytic activity or inhibitor

Question 5

Effector is different from substrate

Answer 5

Heterotopic effector

Question 6

Substrate is the effector

Answer 6

Homotropic effector

Question 7

Hormone molecules or nerve impulse

Answer 7

Primary or first messnger

Question 8

Second messenger

Answer 8

3, 5 cAMP and Ca

Question 9

It weakens the bond between substrate and substrate binding

Answer 9

K series

Question 10

Alters the orientation or charge of catalytic residues

Answer 10

V series

Question 11

Alteration of vmax and km is due to

Answer 11

Conformational change

Question 12

It is stimulated by g proteins and homrmones

Answer 12

Allosteric 2nd messenger

Question 13

Conversion of products taking place in subcellular compartments

Answer 13

Compartmentation

Question 14

Organelle for protein and polysaccharide degradation

Answer 14

Lysosomes

Question 15

Organelle for fatty acid synthesis

Answer 15

Cytosol

Question 16

Organelle for fatty acid oxidation

Answer 16

Mitochondria

Question 17

Ability of enzymes to discriminate between the structurally similar coenzymes NAD and NADP

Answer 17

Compartmentation

Question 18

Mechanism for regulation of enzymes activity

Answer 18

Feedback inhibition

Question 19

End product of a reaction interferes with the enzyme that helped produce it

Answer 19

Feedback inhibition

Question 20

Covalent attachment of another molecule to modify activity of enzyme and protein

Answer 20

Covalent modification

Question 21

Prevents enzymes from breaking down molecules of energy source

Answer 21

Feedback inhibition

Question 22

It is utilized as a mechanism for regulatory control

Answer 22

Phosphorylation-dephosphorylation

Question 23

Permits alteration of functional properties of enzymes

Answer 23

Phosphorylation-dephosphorylation

Question 24

Reverse the effect of kinase by catalyzing the hydrolytic removal of phosphoryl groups attached to proteins

Answer 24

Protein phosphatase

Question 25

Phosphorylate proteins by catalizing transfer of the terminal phosphoryl group of ATP to hydroxyl group

Answer 25

Protein kinase

Question 26

The hereditary transmission of information by means other than the sequence of nucleotides that comprise the genome

Answer 26

Epigenetics