QuizMaster

Question: Which of the following step is assumed to be the slowest step in the Michaelis Menten equation?
[A].

The substrate consuming step

[B].

The product releasing step

[C].

Formation of enzyme substrate complex

[D].

None of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: The relationship between Keq, Km and Vmax is known as
[A].

Haldane equation

[B].

Michaelis Menten equation

[C].

Numerical solution approach

[D].

Gibbs-Helmholtz equation

Answer: Option A

Explanation:

No answer description available for this question.

Question: For an enzyme that displays Michaelis-Menten kinetics, the reaction velocity (as a fraction of Vmax) observed at [S] = 2 KM will be
[A].

0.09

[B].

0.33

[C].

0.66

[D].

0.91

Answer: Option C

Explanation:

No answer description available for this question.

Question: Given an enzyme with a Km = 10m M and Vmax = 100 m mol/min. If [S] = 100 m M, which of the following will be true?
[A].

A 10 fold increase in Vmax would increase velocity 10 fold y

[B].

A 10 fold decrease in Km would increase velocity

[C].

Both (a) and (b)

[D].

A 10 fold increase in Vmax would decrease velocity 20 fold

Answer: Option A

Explanation:

No answer description available for this question.

Question: The plot commonly used for determining the value of Vmax is
[A].

Lineweaver Burk plot

[B].

Langmuir plot

[C].

Eadie Hofstee plot

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Michaelis Menten equation can also be written as
[A].

(-Cs)/r = (Cs/rmax)+(Km/rmax)

[B].

1/r = (1/rmax)+(Km/(rmax.Cs))

[C].

r = rmax-(Km.r/Cs)

[D].

All of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Which of the following refers to pseudo steady state ?
[A].

d(CE)/dt = 0

[B].

d(Cp)/dt = 0

[C].

d(CES)/dt = 0

[D].

d(Cs)/dt = d(CES)/dt

Answer: Option C

Explanation:

No answer description available for this question.

Question: The equation for the rate of product formation for simple enzyme reaction is given by (Where rmax, maximum reaction rate, Cs substrate concentration, Cp product concentration ES, CES enzyme-substrate concentration)
[A].

rp = rmax Cs/(Km+Cs)

[B].

rp= rmax CES/(Km+ CES)

[C].

rp = rmax Cs/(Km+CES)

[D].

rp = rmax Cs/(Km+Cp)

Answer: Option A

Explanation:

No answer description available for this question.

Question: The rate-determining step of Michaelis Menten kinetics is
[A].

the complex formation step

[B].

the complex dissociation step to produce product

[C].

the product formation step

[D].

Both (a)and(c)

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of these proteases is not a cysteine active site protease?
[A].

Calpain

[B].

Cathepsin D

[C].

Papain

[D].

None of the above

Answer: Option B

Explanation:

No answer description available for this question.