Molecular Immunology MCQs with Answers

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Welcome to the Molecular Immunology MCQs with Answers. In this post, we have shared Molecular Immunology Online Test for different competitive exams. Find practice Molecular Immunology Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Molecular Immunology.

Molecular Immunology Online Quiz

By presenting 3 options to choose from, Molecular Immunology Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Molecular Immunology Questions and Answers and click over the correct answer.

Test Name: Molecular Immunology MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Molecular Immunology

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1 / 40

What is the role of regulatory T cells (Tregs)?

To maintain immune tolerance and prevent autoimmune diseases

To produce antibodies

To destroy infected cells

2 / 40

What is an antigen?

A molecule that is recognized by the immune system

A signaling protein

A type of antibody

3 / 40

What is clonal selection?

The production of identical clones of a cell

The process by which an antigen selectively binds to and activates specific lymphocytes

The process of random mutation in lymphocytes

4 / 40

What is allelic exclusion in B cells?

The deletion of non-functional alleles

The process by which each B cell expresses only one allele of the immunoglobulin gene

The expression of multiple alleles in a single cell

5 / 40

What is the role of memory B cells?

To provide a faster and stronger antibody response upon re-exposure to an antigen

To produce antibodies

To present antigens to T cells

6 / 40

What is the significance of V(D)J recombination in the immune system?

It produces identical antibodies

It degrades non-functional antibodies

It generates diversity in the antigen-binding sites of immunoglobulins and T cell receptors

7 / 40

What is an immunological synapse?

The interface between an antigen-presenting cell and a T cell

The site where antibodies are produced

The junction between B cells and T cells

8 / 40

What is the function of MHC class I molecules?

To activate B cells

To produce antibodies

To present endogenous antigens to cytotoxic T cells

9 / 40

What is an epitope?

A component of the MHC

A type of cytokine

The specific part of an antigen recognized by an antibody

10 / 40

What is the primary function of antibodies?

To bind antigens and neutralize pathogens

To synthesize RNA

To degrade DNA

11 / 40

What is the role of the CD8 molecule on T cells?

It is a receptor for antigens

It is a co-receptor that assists in the recognition of antigens presented by MHC class I molecules

It produces antibodies

12 / 40

What is the major histocompatibility complex (MHC)?

A group of signaling molecules

A type of antibody

A set of cell surface proteins important for antigen presentation

13 / 40

What is the function of MHC class II molecules?

To destroy infected cells

To neutralize pathogens

To present exogenous antigens to T helper cells

14 / 40

What is the role of macrophages in the immune response?

To produce antibodies

To phagocytose pathogens and present antigens

To activate B cells

15 / 40

What cells are primarily responsible for the production of antibodies?

T cells

Macrophages

B cells

16 / 40

What is an autoimmune disease?

A condition where the immune system attacks the body's own tissues

A condition where the immune system is inactive

A condition caused by external pathogens

17 / 40

What is the role of antibodies in opsonization?

To coat pathogens and enhance their phagocytosis by immune cells

To produce cytokines

To directly kill pathogens

18 / 40

What is the difference between the variable and constant regions of an antibody?

Constant regions bind antigens

Variable regions bind antigens, constant regions determine the antibody's class

Variable regions determine the antibody's class

19 / 40

What is an immunoglobulin?

A type of antigen

A signaling molecule

Another name for an antibody

20 / 40

What is the function of the J chain in immunoglobulin A (IgA) and immunoglobulin M (IgM)?

To activate complement

To bind antigens

To facilitate the polymerization of IgA and IgM

21 / 40

What is the complement system?

A set of antibodies

A group of signaling molecules

A group of proteins that enhances the ability of antibodies to clear pathogens

22 / 40

What is the role of plasma cells in the immune response?

To activate T cells

To produce and secrete large amounts of antibodies

To phagocytose pathogens

23 / 40

What is the role of the thymus in the immune system?

To mature and differentiate T cells

To filter pathogens from the blood

To produce antibodies

24 / 40

What is the role of T helper cells in the immune response?

To destroy infected cells

To activate B cells and macrophages

To produce antibodies

25 / 40

What is the primary function of antibodies in agglutination?

To degrade pathogens

To neutralize toxins

To cause clumping of pathogens for easier removal by phagocytes

26 / 40

What is the primary function of interleukin-2 (IL-2)?

To promote the growth and differentiation of T cells

To inhibit immune responses

To degrade pathogens

27 / 40

What is the function of the constant (C) region in an antibody molecule?

To degrade pathogens

To bind antigens

To determine the class and effector functions of the antibody

28 / 40

What is the role of interferons in the immune response?

To interfere with viral replication and modulate the immune response

To produce antibodies

To phagocytose pathogens

29 / 40

What is the significance of the CD4 molecule on T cells?

It is a receptor for antigens

It degrades pathogens

It is a co-receptor that assists in the recognition of antigens presented by MHC class II molecules

30 / 40

What is the primary function of antibodies in neutralization?

To activate T cells

To block the binding of pathogens to host cells

To degrade pathogens

31 / 40

What is the primary function of cytotoxic T cells?

To produce antibodies

To activate macrophages

To kill infected or cancerous cells

32 / 40

What is an adjuvant?

A type of antibody

A signaling molecule

A substance that enhances the body's immune response to an antigen

33 / 40

What is the primary function of natural killer (NK) cells?

To produce antibodies

To kill virally infected cells and tumor cells

To activate T cells

34 / 40

What is the primary function of dendritic cells?

To present antigens to T cells

To produce antibodies

To neutralize toxins

35 / 40

What is a monoclonal antibody?

An antibody produced from a single clone of B cells

An antibody produced from multiple B cells

An antibody that binds multiple antigens

36 / 40

What is the role of the Fc region of an antibody?

To bind antigens

To degrade pathogens

To mediate interactions with cell surface receptors and complement proteins

37 / 40

What is a cytokine?

A component of the complement system

A signaling molecule that modulates immune responses

A type of antibody

38 / 40

What is immunological memory?

The ability to forget pathogens

The ability of the immune system to respond more rapidly and effectively to pathogens that have been encountered previously

The degradation of old immune cells

39 / 40

What is the role of Toll-like receptors (TLRs) in the immune response?

To degrade pathogens

To produce antibodies

To recognize pathogen-associated molecular patterns (PAMPs)

40 / 40

What is the role of antibodies in antibody-dependent cell-mediated cytotoxicity (ADCC)?

To activate T helper cells

To recruit natural killer cells to destroy target cells

To produce cytokines

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admin3 weeks ago

0 3 1 minute read