quiz 6

Question 1

Identify all of the examples of non-specific barriers.
A. acid pH in the stomach
B. neutralization by antibodies
C. inflammation
D. fever
E. phagocytosis
F. killing by CTLs
G. lysozyme in saliva

Answer 1

A. acid pH in the stomach
C. inflammation
D. fever
E. phagocytosis
G. lysozyme in saliva

Question 2

Which of the following is mismatched dealing with inflammation?
A. rubor - redness
B. calor - warmth
C. tumor - cancer
D. dolar - pain
E. None is mismatched

Answer 2

C. tumor - cancer

Question 3

Identify all of the correct statements about antigen presenting cells (APCs):
A. APCs include dendritic cells
B. APCs include macrophages
C. APCs engulf and modify antigen to generate epitopes
D. APCs hold and present processed antigen on their cell membrane surface
E. APCs display epitopes on MHC molecules

Answer 3

A. APCs include dendritic cells
B. APCs include macrophages
C. APCs engulf and modify antigen to generate epitopes
D. APCs hold and present processed antigen on their cell membrane surface
E. APCs display epitopes on MHC molecules

Question 4

Identify all of the activities that can be performed by phagocytes.
A. engulfment of antigen
B. digestion of antigens with enzymes
C. antigen processing
D. antigen presentation
E. production of antibodies
F. chemotaxis

Answer 4

A. engulfment of antigen
B. digestion of antigens with enzymes
C. antigen processing
D. antigen presentation
F. chemotaxis

Question 5

Acquired specific immunity involves the response of…
A. skin barriers
B. B and T lymphocytes
C. lysozyme
D. mucus membranes
E. interferon

Answer 5

B. B and T lymphocytes

Question 6

Lymphocyte maturation involves…
A. B cells maturing in bone marrow sites
B. T cells maturing in the thymus
C. release of mature lymphocytes to begin migration to various lymphoid organs
D. elimination of self-reactive lymphocytes
E. All of the choices are correct

Answer 6

E. All of the choices are correct

Question 7

An example of artificially acquired passive immunity is…
A. immunity arising from antibodies passed to the newborn in breast milk
B. immunity that arises following vaccination with a live attenuated virus
C. immunity arising from the use of antitoxin in treatment of tetanus
D. immunity that arises following infection
E. immunity arising from antibodies passed to the newborn through the placenta

Answer 7

C. immunity arising from the use of antitoxin in treatment of tetanus

Question 8

IgA…
A. is made of five antibody subunits, and is the main antibody produced during a primary response
B. represents 80% of serum antibody and can cross the placenta
C. is secreted in tears, saliva, mucus and breast milk
D. is involved in allergic reactions
E. is involved in immune regulation

Answer 8

C. is secreted in tears, saliva, mucus and breast milk

Question 9

What process provides many copies of B cells and T cells that are activated against specific antigens?
A. antigen expression
B. antibody production
C. clonal expansion
D. antigen presentation
E. opsonization

Answer 9

C. clonal expansion