Antigen Elimination Mechanism and Antiviral Functions Quiz

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30 Questions

What is the role of Natural Killer (NK) cells?

Killing tumor cells, fungi, and virus-infected cells

Where do B lymphocytes mature?

Bone marrow

What is the main function of Neutrophils during infections?

Releasing hydrolytic enzymes

Which cell type is least common among granulocytes?


What is the distinctive feature of Natural Killer (NK) cells?

Having large size and prominent granulation

From which cell type are Macrophages derived?


What is one of the mechanisms of antigen elimination mentioned in the text?

T cell proliferation

Which type of cell is cytotoxic to some tumor cells and can stimulate T cell proliferation and IL-2 production according to the text?

NK cell

What is a recommended management approach for viral infections as mentioned in the text?

Supportive treatment

In the context of Covid-19 pneumonia, what is stressed by the Department of Health (DOH) regarding antibiotic usage?

Avoid antibiotic usage

Which of the following components helps in neutralizing microbes and toxins by opsonization and phagocytosis?


What is the primary function of Colony-Stimulating Factors according to the text?

Directing bone marrow stem cell division

What is the significance of specificity in the immune system?

Ability to recognize and respond to many different microbes

Which role of the immune system implies the potential for immunotherapy of cancer?

Defense against tumors

What does clonal expansion in the immune system refer to?

Keeping pace with rapidly proliferating microbes

How does the immune system achieve nonreactivity to self?

Preventing injurious immune responses against host cells

Which type of immunity results from our body developing antibodies as a defense mechanism?

Active immunity

What is the main function of polymorphonuclear leukocytes (neutrophils) in the immune response?

Response against infections

What is the function of C3a in the complement pathway?

Induces inflammation

In the alternative pathway, what helps stabilize the C3 convertase (C3bBb)?


Which component of the complement pathway is responsible for opsonization and phagocytosis?


What initiates the classic pathway of the complement system?


Which component of the complement system constitutes the membrane attack complex?


Which type of immunoglobulin makes up 20% of the protein in blood plasma?


Which mechanism involves the release of lymphokines or cytokines directly affecting effector cells?

Third mechanism

In which type of hypersensitivity reaction do antigens react with IgE bound to mast cells causing degranulation and the release of histamine?

Type I (Anaphylactic)

Which function is NOT associated with histamine in the context of hypersensitivity reactions?

Cytokine secretion

Which hypersensitivity reaction involves immune complex deposition in vessel walls and other substances?

Type III (Immune Complex)

What is the primary mediator involved in the Type I (Anaphylactic) hypersensitivity reaction?


Which condition is NOT an example given for Type I (Anaphylactic) hypersensitivity reactions?

Autoimmune diseases

Test your knowledge on the mechanism of antigen elimination, T cell proliferation stimulation, IL-2 production, and antiviral functions. Explore the role of interferons in antiviral responses and the considerations for antibiotic use in Covid-19 pneumonia cases.

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