Question 1

Antibodies and T lymphocytes are the respective mediators of which two types of immunity?

Accepted Answer

A)  Innate and adaptive
B)  Passive and active
C)  Specific and nonspecific
D)  Humoral and cell-mediated
E)  Adult and neonatal D

Question 2

The principal function of the immune system is:

Accepted Answer

A)  Defense against cancer
B)  Repair of injured tissues
C)  Defense against microbial infections
D)  Prevention of inflammatory diseases
E)  Protection against environmental toxins C

Question 3

Which of the following cell types is required for all humoral immune responses?

Accepted Answer

A)  Natural killer cells
B)  Dendritic cells
C)  Cytolytic T lymphocytes
D)  B lymphocytes
E)  Helper T lymphocytes D

Question 4

Which of the following is a unique property of the adaptive immune system?

Accepted Answer

A)  Highly diverse repertoire of specificities for antigens
B)  Self-nonself discrimination
C)  Recognition of microbial structures by both cell-associated and soluble receptors
D)  Protection against viral infections
E)  Responses that have the same kinetics and magnitude on repeated exposure to the same microbe

Question 5

Which of the following infectious diseases was prevented by the first successful vaccination?

Accepted Answer

A)  Polio
B)  Tuberculosis
C)  Smallpox
D)  Tetanus
E)  Rubella

Question 6

The two major functional classes of effector T lymphocytes are:

Accepted Answer

A)  Helper T lymphocytes and cytotoxic T lymphocytes
B)  Natural killer cells and cytotoxic T lymphocytes
C)  Memory T cells and effector T cells
D)  Helper cells and antigen-presenting cells
E)  Cytotoxic T lymphocytes and target cells

Exam 11: General-Properties-Of-The-Immune-System