Enzymes, Carbohydrates and Gycobiology MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Enzymes, Carbohydrates and Gycobiology, a fundamental topic in the field of Biochemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Enzymes, Carbohydrates and Gycobiology 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, Carbohydrates and Gycobiology mcq questions that explore various aspects of Enzymes, Carbohydrates and Gycobiology problems. Each MCQ is crafted to challenge your understanding of Enzymes, Carbohydrates and Gycobiology principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Enzymes, Carbohydrates and Gycobiology MCQs are your pathway to success in mastering this essential Biochemistry topic.

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Enzymes, Carbohydrates and Gycobiology MCQs | Page 1 of 20

Discover more Topics under Biochemistry

Q1.
The cleavage specificity of trypsin and chymotrypsin depend in part on the

a.

proximity of Ser 195 to the active site or specificity pocket

b.

size, shape, and charge of the active site or specificity pocket

c.

presence of a low-barrier hydrogen bond in the active site or specificity pocket

d.

absence of water in the active site

Discuss
Answer: (b).size, shape, and charge of the active site or specificity pocket
Q2.
The E.coli pyruvic acid dehydrogenase complex is reported to

a.

decatalyze the oxidation of pyruvic acid to acetyl Co A and CO₂

b.

Catalyze the oxidation of pyruvic acid to acetyl Co A and CO₂

c.

retard the reduction of pyruvic acid to acetyl Co A and CO₂

d.

Catalyze the reduction of pyruvic acid to acetyl Co A and CO₂

Discuss
Answer: (b).Catalyze the oxidation of pyruvic acid to acetyl Co A and CO₂
Q3.
Which of the common features are shared between serine and aspartate proteases?

a.

Both require water to complete the catalytic cycle

b.

Both use a base to activate the nucleophile

c.

Both show specificity for certain amino acid sequences

d.

All of the above

Discuss
Answer: (d).All of the above
Q4.
Before they can react, many molecules need to be destabilized. This state is typically achieved through

a.

changing the three-dimensional shape of the molecule

b.

oxidizing the molecules by removing electrons

c.

changing the reaction from a biosynthetic to a catabolic pathway

d.

the input of a small amount of activation energy

Discuss
Answer: (d).the input of a small amount of activation energy
Q5.
Common feature in all serine proteases is a

a.

hydrophobic specificity pocket

b.

hydrophilic specificity pocket

c.

cluster of reactive serine residues

d.

single reactive serine residue

Discuss
Answer: (d).single reactive serine residue
Q6.
Enzyme-driven metabolic pathways can be made more efficient by

a.

concentrating enzymes within specific cellular compartments

b.

grouping enzymes into free-floating, multienzyme complexes

c.

fixing enzymes into membranes so that they are adjacent to each other

d.

All of the above

Discuss
Answer: (d).All of the above
Q7.
Which of the following (s) is/are serine proteases?

a.

Chymotrypsin

b.

Trypsin

c.

Elastase

d.

all of these

Discuss
Answer: (d).all of these
Q8.
Which of the following statements about enzymes or their function is true?

a.

Enzymes do not alter the overall change in free energy for a reaction

b.

Enzymes are proteins whose three-dimensional form is key to their function

c.

Enzymes speed up reactions by lowering activation energy

d.

All of the above

Discuss
Answer: (d).All of the above
Q9.
Tryprotophan synthetase of E.coli, a typical bifunctional oligomeric enzyme consist of

a.

a protein designated A

b.

two proteins designated A and B

c.

a protein A and one-subunit a

d.

a protein designated B

Discuss
Answer: (b).two proteins designated A and B
Q10.
What is the specificity of the Clostripain protease?

a.

It cleave after Arg residues

b.

It cleave after His residues

c.

It cleave after Lys residues

d.

None of the above

Discuss
Answer: (a).It cleave after Arg residues
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