Filters
Question type

Study Flashcards

Cells that release histamine are:


A) neutrophils.
B) mast cells.
C) B cells.
D) T cells.
E) macrophages.

F) A) and D)
G) B) and E)

Correct Answer

verifed

verified

Which of the following are the first line of defense against microbial attack?


A) nonspecific responses
B) immune responses
C) external barriers
D) mucous and ciliary actions

E) A) and B)
F) A) and C)

Correct Answer

verifed

verified

Each B cell of the immune system produces:


A) only one kind of antibody.
B) several different antibodies.
C) an infinite diversity of antibodies.
D) the antibodies specified by its variable region gene.
E) the antibodies specified by its constant region gene.

F) A) and E)
G) B) and D)

Correct Answer

verifed

verified

The proteins that must be matched as closely as possible between an organ donor and a recipient are the ________ proteins.


A) glyco-
B) MHC
C) clotting factor
D) cytokine

E) A) and B)
F) A) and C)

Correct Answer

verifed

verified

Vaccinations protect against future exposure to disease organisms by:


A) increasing the number of red blood cells.
B) stimulating suppressor T cells.
C) increasing complement proteins.
D) forming memory cells.

E) A) and B)
F) A) and C)

Correct Answer

verifed

verified

Antibodies are Y-shaped. The part of the Y that binds to an antigen is the:


A) constant region of the light chain.
B) tip of the arm.
C) stem of the Y.
D) constant region of the heavy chain.

E) A) and D)
F) C) and D)

Correct Answer

verifed

verified

Antibodies attach to a B cell via:


A) mucus.
B) the stem of the antibody.
C) the heavy chain of the arm of the antibody.
D) the light chain of the arm of the antibody.
E) sticky proteins produced by T cells.

F) A) and D)
G) A) and C)

Correct Answer

verifed

verified

Macrophages:


A) cannot squeeze through capillary walls.
B) are microbe-digesting enzymes in tears, saliva, and mucus.
C) act by phagocytosis.
D) are microbes located within the immune system.

E) A) and B)
F) A) and C)

Correct Answer

verifed

verified

Vaccinations involve injecting ________ into the person or animal.


A) weakened or killed microbes
B) antibiotics
C) the disease itself
D) antibodies against the disease
E) antibodies against similar diseases

F) None of the above
G) A) and B)

Correct Answer

verifed

verified

Showing 81 - 89 of 89

Related Exams

Show Answer