Portage Learning, Microbiology Module
6 Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What is the role of memory cells in adaptive immunity?
✔✔ They provide a faster response upon re-exposure to the same pathogen.
What type of lymphocyte matures in the thymus?
✔✔ T cell
What type of lymphocyte is responsible for producing antibodies?
✔✔ B cell
What part of the immune system creates specific responses to pathogens?
✔✔ Adaptive immune system
What type of immunity is acquired through breast milk or placenta?
✔✔ Passive natural immunity
1
,What type of immunity develops after recovering from an infection?
✔✔ Active natural immunity
What are the proteins found on the surface of pathogens that trigger an immune response?
✔✔ Antigens
What class of antibody is the most abundant in blood circulation?
✔✔ IgG
What class of antibody is secreted in mucosal surfaces like saliva and tears?
✔✔ IgA
What class of antibody is the first to appear during an initial immune response?
✔✔ IgM
What cells destroy virus-infected or cancerous cells directly?
✔✔ Cytotoxic T cells
2
, What type of T cell helps activate B cells and other immune cells?
✔✔ Helper T cell
What do plasma cells produce in large quantities?
✔✔ Antibodies
What do antigen-presenting cells display on their surfaces?
✔✔ Processed antigens with MHC molecules
What kind of protein marks infected cells for destruction by immune cells?
✔✔ MHC I
What kind of protein helps T cells recognize antigens presented by other immune cells?
✔✔ MHC II
What are cytokines?
✔✔ Signaling proteins used in immune communication
3
6 Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What is the role of memory cells in adaptive immunity?
✔✔ They provide a faster response upon re-exposure to the same pathogen.
What type of lymphocyte matures in the thymus?
✔✔ T cell
What type of lymphocyte is responsible for producing antibodies?
✔✔ B cell
What part of the immune system creates specific responses to pathogens?
✔✔ Adaptive immune system
What type of immunity is acquired through breast milk or placenta?
✔✔ Passive natural immunity
1
,What type of immunity develops after recovering from an infection?
✔✔ Active natural immunity
What are the proteins found on the surface of pathogens that trigger an immune response?
✔✔ Antigens
What class of antibody is the most abundant in blood circulation?
✔✔ IgG
What class of antibody is secreted in mucosal surfaces like saliva and tears?
✔✔ IgA
What class of antibody is the first to appear during an initial immune response?
✔✔ IgM
What cells destroy virus-infected or cancerous cells directly?
✔✔ Cytotoxic T cells
2
, What type of T cell helps activate B cells and other immune cells?
✔✔ Helper T cell
What do plasma cells produce in large quantities?
✔✔ Antibodies
What do antigen-presenting cells display on their surfaces?
✔✔ Processed antigens with MHC molecules
What kind of protein marks infected cells for destruction by immune cells?
✔✔ MHC I
What kind of protein helps T cells recognize antigens presented by other immune cells?
✔✔ MHC II
What are cytokines?
✔✔ Signaling proteins used in immune communication
3
