Immunology Quiz

What are antibodies primarily composed of?

• Nucleic acids

• Globulin proteins

• Lipids

• Carbohydrates

Which class of antibody is most abundant in blood plasma?

• IgA

• IgM

• IgG

• IgE

What is the primary function of C3b in the complement system?

• To induce fever

• To opsonize bacteria

• To activate B cells

• To produce antibodies

Which pathway of complement activation bypasses the antibody requirement?

• C3b pathway

• Alternative pathway

• Classic pathway

• Lectin pathway

What type of hypersensitivity is mediated by IgE?

• Type I

• Type II

• Type III

• Type IV

Which of the following is a clinical manifestation of Type II hypersensitivity?

• Asthma

• Hemolytic anemia

• Erythema multiforme

• Rheumatoid arthritis

What is the role of C5a in the complement system?

• Opsonization

• Chemotaxis

• Cytolysis

• Antibody production

Which type of hypersensitivity involves immune complexes?

• Type II

• Type IV

• Type III

• Type I

What is the main function of the membrane attack complex?

• To cause cytolysis

• To neutralize toxins

• To enhance antibody production

• To attract neutrophils

Which of the following is NOT a function of antibodies?

• Activating complement

• Producing cytokines

• Opsonizing microbes

• Neutralizing toxins