Immunology Final Exam Questions and Answers 2026 Question Bank

Immunology Final Exam Questions
and Answers 2026 Question Bank
Which of the following is NOT apart of the Acquired Immune System?
a. Passive Immunization
b. Active Immunization
c. Physiological and Chemical Barriers
d. None of the above - <CORRECT ANSWER >>C. Physiological and Chemical Barriers


What are the characteristics of the Immune Response?
a. Adaptive
b. Indiscrimination between self and none-self
c. A & B
d. A & C
e. All the above - <CORRECT ANSWER >>d. A & C


Which of the following is true about antigen-presenting cells?
a. They are macrophages
b. Present antigens to T-cells
c. MHC complexes are present upon them
d. All the above
e. None of the above - <CORRECT ANSWER >>d. All the above


What characteristic is true about the clonal selection theory?
a. Recognizes foreign molecules
b. Self-reactive epitopes are shut off
c. Very few antigen specificities present before antigenic contact

,d. Both A & B
e. Both B & C
f. All of the above - <CORRECT ANSWER >>d. Both A & B


What is true about lymphocytes?
a. B Lymphocytes secrete antibodies
b. T Lymphocytes secrete cytokines
c. There are multiple specificities per lymphocytes
d. Both A & B
e. All the above - <CORRECT ANSWER >>d. Both A & B


Antibody interactions are:
a. strong with covalent bonds
b. weak with covalent bonds
c. strong with Van der Waals forces
d. Weak with Van der Waals forces
e. Contain both weak and strong bonds - <CORRECT ANSWER >>d. Weak with Van der Waals
forces


Which type of T-Cell kills other cells?
a. helper
b. cytotoxic
c. DHT
d. All the above - <CORRECT ANSWER >>b. cytotoxic


What are the characteristics of innate immunity?
a. Non-specific

,b. Born with it
c. Body's second line of defense
d. A & B
e. B & C
f. A & C - <CORRECT ANSWER >>d. A & B


Which of the following is NOT a physiological or chemical barrier to a foreign invader?
a. Acidic pH in nostril membranes
b. Cough reflex
c. High pH in GI Tract
d. Pulmonary macrophages
e. None of the above - <CORRECT ANSWER >>c. High pH in GI Tract


Which of the following are true regarding phagocytosis?
a. Opsonins are used to enhance antigen target
b. PMN's and macrophages are involved in phagocytosis
c. Defects in phagocytosis causes recurrent infections
d. All of the above - <CORRECT ANSWER >>d. All of the above


The reticuloendothelial system (RES) is involved in:
a. Macrophage phagocytosis
b. Innate Immunity
c. Elimination of aged or imperfect cells.
d. A & B
e. A & C
f. All the above - <CORRECT ANSWER >>f. All the above

, Which of the following is NOT true about the Nature Killer (NK) cells?
a. They are apart of the innate immune system
b. They have Killer-Excitatory Receptors (KER's), which bind to MHC I complexes
c. They kill foreign cells by lysis or apoptosis
d. They kill virus infected and tumor cells
e. None of the above - <CORRECT ANSWER >>b. They have Killer-Excitatory Receptors (KER's),
which bind to MHC I complexes


Which of the following is NOT a symptom of inflammation?
a. Swelling
b. Redness
c. Pain
d. Gain of Function
e. Head - <CORRECT ANSWER >>d. Gain of Function


What are the local effects of kinins?
a. Smooth muscle contraction
b. Decreased vascular permeability to all for leukocyte extravasion
c. Inhibit pain and itching
d. None of the above
e. All of the above - <CORRECT ANSWER >>d. None of the above


What is the primary lymphoid organ for T-lymphocytes?
a. Thymus
b. Tonsils
c. Throat
d. Bone marrow