Viral Infections and Immunology Quiz

Which of the following describes complementation in viral infections?

• Two viruses fuse to form a hybrid genome

• Two viruses exchange genetic material

• One virus provides a missing protein for another virus

• A virus undergoes spontaneous mutation

Which one of the following parasites is more common among children?

• Hymenolepis nana

• Taenia solium

• Taenia saginata

• Echinococcus granulosus

What happens if receptor editing in B cells fails?

• The cells become plasma cells

• The cells migrate to lymph nodes

• The cells become memory B cells

• The cells undergo apoptosis

Which of the following best describes the epitope?

• A small portion of the antigen recognized by the antibody binding site

• A carrier protein for haptens

• The total number of binding sites on an antigen

• The strength of attraction between antigen and antibody

Which of the following parasites is a lung fluke?

• Fasciolopsis buski

• Paragonimus westermani

• Heterophyes heterophyes

• Schistosoma mansoni

Which of the following chemoattractant mediate migration of circulating neutrophils and monocytes (phagocytes) to the site of inflammation?

• C3b + IL-1

• C3b + IL-8

• C5a + IL-2

• C5a + IL-8

Which form of Trypanosoma is found in human blood?

• Promastigote

• Amastigote

• Trypomastigote

• Epimastigote

Which of the following fungi that forms spherules and endospores?

• Paracoccidiodes

• Coccidioides

• Blastomyces

• Histoplasma

Which of the following best describes antigen sequestration?

• The presentation of antigen by APCs

• The process of opsonization

• The binding of antigens by antibodies

• The anatomical isolation of certain self-antigens

Which stage of Toxoplasma gondii is found in undercooked meat?

• Sporulated oocyst

• Bradyzoites in tissue cysts

• Oocysts

• Sporozoites