Antibodies and Immune System MCQs

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

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Q51.
An endergonic reaction is one that

a.

requires energy in order to proceed

b.

releases energy for work

c.

gives off much heat

d.

looses energy

Discuss
Answer: (a).requires energy in order to proceed
Q52.
Reduction is the

a.

loss of proton

b.

gain of electron

c.

loss of electron

d.

gain of protons

Discuss
Answer: (b).gain of electron
Q53.
If the Keq for an enzymatic reaction is greater than 1, the reaction

a.

will be endergonic

b.

can not occur without the input of energy

c.

both (a) and (b)

d.

none of these

Discuss
Answer: (d).none of these
Q54.
An exergonic reaction is one that

a.

requires energy to proceed

b.

releases energy for work

c.

gives off much heat

d.

looses energy

Discuss
Answer: (b).releases energy for work
Q55.
If the free energy change (ฮ”G) in a reaction is a negative value, it indicates that the

a.

reaction releases energy

b.

reaction absorbs energy

c.

reaction is in negative direction

d.

reaction is in positive direction

Discuss
Answer: (a).reaction releases energy
Q56.
To a living organism, which of the following has the greatest amount of available energy per molecule?

a.

ATP

b.

ADP

c.

AMP

d.

H2O

Discuss
Answer: (a).ATP
Q57.
Which of the following is the best evidence for the lock and key theory of enzyme action?

a.

Compounds similar in structure to the substrate inhibit enzyme activity

b.

Enzymes are found in living organisms and speed up certain reactions

c.

Enzymes speed up reactions by definite amounts

d.

Enzymes determine the direction of a reaction

Discuss
Answer: (a).Compounds similar in structure to the substrate inhibit enzyme activity
Q58.
In the reaction, C6H12O6+ 6O2 โ†’ 6CO2 + 6H2O + energy, which component is being oxidized?

a.

C6H12O6

b.

O2

c.

CO2

d.

H2O

Discuss
Answer: (a).C6H12O6
Q59.
The fact that ฮฒ-oxidation of fatty acids, occurs in the mitochondria whereas fatty acid synthesis occurs in the cytoplasmic matrix, is an example of regulation of enzymatic activity by the __________ mechanism.

a.

compartmentation

b.

induction

c.

competitive inhibition

d.

repression

Discuss
Answer: (d).repression
Q60.
In the reaction, C6H12O6 + 6O2 โ†’ 6CO2 + 6H2O + energy, which component is being reduced?

a.

O2

b.

CO2

c.

H2O

d.

Energy

Discuss
Answer: (a).O2
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