Enzymes and Kinetics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Enzymes and Kinetics, a fundamental topic in the field of Biochemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Enzymes and Kinetics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Enzymes and Kinetics mcq questions that explore various aspects of Enzymes and Kinetics problems. Each MCQ is crafted to challenge your understanding of Enzymes and Kinetics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Enzymes and Kinetics MCQs are your pathway to success in mastering this essential Biochemical Engineering topic.

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Enzymes and Kinetics MCQs | Page 2 of 11

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Q11.
Which category of enzymes belongs to class two in the international classification?

a.

Hydrolases

b.

Ligases

c.

Transferases

d.

Isomerase

Discuss
Answer: (c).Transferases
Q12.
The Woolf-Augusteinsson-Hofstee plot of ν versus ν/[S] and the Eadie-Scatchard plot of ν/[S] versus ν do not involve reciprocals of ν therefore are considered to be more reliable when the error in v is

a.

non-significant

b.

significant

c.

nothing to do with the reliability

d.

non significant in selected cases

Discuss
Answer: (b).significant
Q13.
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

Discuss
Answer: (a).Haldane equation
Q14.
The reciprocal equation for non competitive inhibition can be arranged to the equation for the

a.

Dixon plot

b.

Woolf-Augusteinsson-Hofstee plot

c.

Eadie-Scatchard plot

d.

Hanes-Woolf plot

Discuss
Answer: (a).Dixon plot
Q15.
Which of the following statements is true for enzymatically catalyzed reaction?

a.

The activation energy of the reaction is lowered so that a larger proportion of the substrate qualifies to overcome it

b.

Additional substrate molecules are energized to overcome the activation energy of the reaction

c.

The activation energy of the reaction is increased, thus decreasing the likelihood that any substrate molecules will overcome it

d.

The activation energy of the reaction is lowered so that a fewer substrate molecules can overcome it

Discuss
Answer: (a).The activation energy of the reaction is lowered so that a larger proportion of the substrate qualifies to overcome it
Q16.
Which of the following common drugs is not a specific enzyme inhibitor?

a.

Iodine

b.

Methotrexate

c.

Sulfbnilamide

d.

Penicillin

Discuss
Answer: (a).Iodine
Q17.
The enzyme inhibition can occur by

a.

reversible inhibitors

b.

irreversible inhibitors

c.

Both (a) and (b)

d.

None of these

Discuss
Answer: (c).Both (a) and (b)
Q18.
In a Lineweaver-Burk Plot, competitive inhibitor shows which of the following effect?

a.

It moves the entire curve to right

b.

It moves the entire curve to left

c.

It changes the x-intercept

d.

It has no effect on the slope

Discuss
Answer: (c).It changes the x-intercept
Q19.
Which of the following statements is not true?

a.

Enzymes are proteins that bind to specific substrates and increase the velocity of reactions involving those substrates

b.

Enzymes function by overcoming the activation energy barrier of a reaction

c.

Enzymes make thermodynamically favorable reactions to proceed; they cannot make unfavorable reactions to occur

d.

Enzymes only function when they are in intact cells

Discuss
Answer: (d).Enzymes only function when they are in intact cells
Q20.
Non-competitive inhibitor of an enzyme catalyzed reaction

a.

decreases Vmax

b.

binds to Michaelis complex (ES)

c.

both (a) and (b)

d.

can actually increase reaction velocity in rare cases

Discuss
Answer: (c).both (a) and (b)
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