Following are the secondary lymphoid organs, EXCEPT

• Lymph node

• Spleen

• Tonsils

• Thymus

Nonspecific host defenses that exist prior to exposure to an antigen is called

acquired immunity

• YES

• NO

Which of the following statements are TRUE?

• T cells ''born'' in the thymus and matures in bone marrow

• B cells ''born'' in the bone marrow and mature in the thymus

• T cells ''borns'' in the bone marrow and mature in the blood

• B cells ''borns'' and mature in the bone marrow

Innate immunity response takes at least 12 hours to be activated

• YES

• NO

Which of the following is NOT part of innate immunity?

• Macrophage

• Complements

• Phagocytosis

• Antibodies

Which of the following statement is TRUE?

• Acquired immunity is not specific

• Innate immune response is enhanced after repeated exposure

• Adaptive immunity response is immediate

• Adaptive immunity produces memory cells

Innate immunity is specific and has a wide range of diversity

• YES

• NO

Vaccination is an example of

• Naturally acquired active immunity

• Artificially acquired active immunity

• Naturally acquired passive immunity

• Artificially acquired passive immunity

Newborns get their antibodies from mothers milk. This is an example of

• Naturally acquired active immunity

• Artificially acquired active immunity

• Naturally acquired passive immunity

• Artificially acquired passive immunity

What is herd immunity?

• The number of disease-fighting white blood cells in a person

• Large number of individuals in a community becomes immune to a disease

• Immunity in a herd of cows

• The number of people that opt out of getting vaccinations