BIOC 3021 Exam 2| Ques ons and answers | Updated
RATED A+
Which of the following is NOT true about enzyme kine cs
The conversion of E + S to ES is usually not reversible
What is TRUE about the Km of an enzyme
it has the same units as substrate concentra on
Which is NOT true about a Michaelis-Menten Plot:
at low and intermediate levels of (S) the rate does not change much as substrate concentra on
is increased
What does Kcat represent in the formula Kcat = Vmax/[Et].:
turnover number
The intercept with the ordinate (ver cal line) on a Lineweaver-Burk plot equals:
1/Vmax
What are the characteris cs of non-compe ve enzyme inhibitors
they lower the Vmax of an enzyme
In the ac ve site of chymotrypsin which amino acid acts as a nucleophile
Serine
During an enzyme reac on transi on state intermediates
o7en bind more ghtly than substrate or product
Carbonic Anhydrase is a zinc enzyme that catalyzes the synthesis of:
bicarbonate
Which feature is NOT found in most serine proteases
vitamin containing cofactor
Which amino acid in the cataly c triad of chymotrypsin can carry a posi ve charge
his dine
RATED A+
Which of the following is NOT true about enzyme kine cs
The conversion of E + S to ES is usually not reversible
What is TRUE about the Km of an enzyme
it has the same units as substrate concentra on
Which is NOT true about a Michaelis-Menten Plot:
at low and intermediate levels of (S) the rate does not change much as substrate concentra on
is increased
What does Kcat represent in the formula Kcat = Vmax/[Et].:
turnover number
The intercept with the ordinate (ver cal line) on a Lineweaver-Burk plot equals:
1/Vmax
What are the characteris cs of non-compe ve enzyme inhibitors
they lower the Vmax of an enzyme
In the ac ve site of chymotrypsin which amino acid acts as a nucleophile
Serine
During an enzyme reac on transi on state intermediates
o7en bind more ghtly than substrate or product
Carbonic Anhydrase is a zinc enzyme that catalyzes the synthesis of:
bicarbonate
Which feature is NOT found in most serine proteases
vitamin containing cofactor
Which amino acid in the cataly c triad of chymotrypsin can carry a posi ve charge
his dine
