Immuno Lecture Questions

B

What is the most important characteristic of innate immunity?

A) Activation only after prior exposure

B) Immediate response to infection

C) Generation of memory responses

D) Antibody production

Redness, heat, swelling, pain

What are the four cardinal signs of inflammation?

C

Which receptors are primarily used by innate immune cells to recognize bacteria?

A) B cell receptors

B) T cell receptors

C) Phagocytic receptors

D) Signaling receptors

D

Which of the following is not a major antiviral defense mechanism?

A) Type 1 interferon

B) NK cell killing

C) T cell killing

D) Vasodilation

C

Which of the following is characteristic of adaptive immunity?

A) Rapid response

B) No memory

C) Antigen specificity

D) Same response every time

C

Active immunity is acquired through:

A) Colostrum

B) Placenta

C) Vaccination

D) Antibody injection

C

Which of the following cells mediate humoral immunity?

A) CD4+ T cells

B) CD8+ T cells

C) B cells

D) Macrophages

D

Which of the following organs is a secondary lymphoid organ?

A) Bone marrow

B) Thymus

C) Bursa of Fabricius

D) Lymph node

B

Which statement is true?

A) Antibodies enter cells efficiently

B) Antibodies neutralize pathogens

C) Antibodies are produced by T cells

D) Antibodies kill infected cells directly

B

Why is V(D)J recombination necessary?

A) To increase gene number

B) To generate receptor diversity

C) To activate macrophages

D) To produce cytokines

C

What process occurs in the germinal center to improve antibody affinity?

A) V(D)J recombination

B) Negative selection

C) Somatic hypermutation

D) Apoptosis only

A

What is the primary function of plasma cells?

A) Antibody production

B) Antigen presentation

C) Phagocytosis

D) Complement activation

B

What is a characteristic of the secondary humoral response?

A) Slow and weak

B) Rapid and robust

C) Delayed and weak

D) No antibodies

C

What property remains unchanged after class switching?

A) Antibody class

B) Antibody function

C) Antigen specificity

D) Constant region

C

Which antibody class is produced first during a primary immune response?

A) IgA

B) IgG

C) IgM

D) IgE

A

Which antibody class is the major antibody in mucosal secretions?

A) IgA

B) IgG

C) IgM

D) IgE

D

Which antibody class is involved in allergic reactions?

A) IgA

B) IgG

C) IgM

D) IgE