Enzymes & Chemical Work of Cells

Question 1

ligand

Answer 1

molecules to which an enzyme binds (substrate)

Question 2

specificity

Answer 2

the ability of an enzyme to bind one molecule in preference over another

Question 3

affinity

Answer 3

strength of binding to a substrate

Question 4

enzyme

Answer 4

catalyzes chemical alteration of ligand/substrate by lowering activation energy

Question 5

kinase

Answer 5

enzyme that phosphorylates other proteins; transfers phosphate to another protein using ATP

Question 6

Vmax

Answer 6

the maximum velocity of enzyme; dependent on enzyme concentration

Question 7

Km

Answer 7

(Michaelis constant); affinity of an enzyme for a substrate

Question 8

enzymes in common pathways

Answer 8

diffusion, scaffold, & multifunctional

Question 9

multifunctional enzyme

Answer 9

encoded by a single gene that has more than one catalytic activity

Question 10

Pyruvate Dehydrogenase Complex

Answer 10

multifunctional enzyme that exchanges Pyruvate (end product of glycolysis) for Acetyl CoA