Human Immune System Quiz

Try out this Human Immune System quiz to test your knowledge. Human Immune System trivia explores the remarkable defenses that help the body recognize and respond to germs, injuries, and other threats.

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15 questions

~3 min to finish

Easy to hard difficulty

450 pts max score

Question 1 · Hard · 40 pts
On nearly all nucleated human cells, which class of MHC molecule is present?
Question 2 · Hard · 40 pts
Professional antigen-presenting cells mainly express which class of MHC molecule?
Question 3 · Hard · 40 pts
In which organ do T cells undergo both positive and negative selection?
Question 4 · Hard · 40 pts
Which pair of genes is essential for V(D)J recombination in developing lymphocytes?
Question 5 · Hard · 40 pts
Activated B cells use what process to improve antibody affinity by introducing variation?
Question 6 · Hard · 40 pts
Which mechanism changes an antibody's isotype while leaving antigen specificity unchanged?
Question 7 · Hard · 40 pts
During many antibody responses, what structures form in secondary lymphoid organs?
Question 8 · Hard · 40 pts
What is the name of the process that raises the average binding strength of antibodies over time?
Question 9 · Hard · 40 pts
What is the pore-forming terminal structure of the complement cascade called?
Question 10 · Hard · 40 pts
Cytotoxic lymphocytes rely on which molecule to help deliver granzymes into target cells?
Question 11 · Easy · 10 pts
Which immune organ lies in the upper chest behind the sternum?
Question 12 · Easy · 10 pts
What organ is found in the left upper part of the abdomen?
Question 13 · Easy · 10 pts
Which cells produce antibodies?
Question 14 · Easy · 10 pts
CD4 is commonly associated with which type of T cell?
Question 15 · Easy · 10 pts
What are allergy shots a form of?

On nearly all nucleated human cells, which class of MHC molecule is present?

Professional antigen-presenting cells mainly express which class of MHC molecule?

In which organ do T cells undergo both positive and negative selection?

Which pair of genes is essential for V(D)J recombination in developing lymphocytes?

Activated B cells use what process to improve antibody affinity by introducing variation?

Which mechanism changes an antibody's isotype while leaving antigen specificity unchanged?

During many antibody responses, what structures form in secondary lymphoid organs?

What is the name of the process that raises the average binding strength of antibodies over time?

What is the pore-forming terminal structure of the complement cascade called?

Cytotoxic lymphocytes rely on which molecule to help deliver granzymes into target cells?

Which immune organ lies in the upper chest behind the sternum?

What organ is found in the left upper part of the abdomen?

Which cells produce antibodies?

CD4 is commonly associated with which type of T cell?

What are allergy shots a form of?