Immunology Quiz

Which immunoglobulin is first produced in response to an infection?

• IgA

• IgM

• IgG

• IgE

What is the main function of helper T cells (CD4+)?

• Produce antibodies

• Kill infected cells directly

• Activate B cells and macrophages

• Digest pathogens

Which immune cell is responsible for phagocytosis and is among the first responders to infection?

• B cell

• Eosinophil

• Neutrophil

• Basophil

Which organ is responsible for the maturation of T cells?

• Bone marrow

• Thymus

• Spleen

• Lymph node

Which complement pathway is triggered by antigen-antibody complexes?

• Alternative

• Classical

• Lectin

• Passive

What part of the antibody binds to antigens?

• Fc region

• Hinge region

• Fab region

• Heavy chain

Which of the following is a serologic test used to detect syphilis?

• ANA

• RPR

• ELISA

• Western Blot

Which immunoglobulin is found in secretions such as saliva and tears?

• IgG

• IgE

• IgA

• IgM

What is the final result of all complement pathways?

• Antibody production

• Inflammation

• Opsonization

• Formation of the Membrane Attack Complex (MAC)

Which serologic technique uses an enzyme and a color reaction for detection?

• Immunofluorescence

• ELISA

• Latex agglutination

• Western blot