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masteringmicrobiology

The ability of a specific immune cell to proliferate and form many generations of nearly identical cells is called ______.
specificity
memory
clonality
inducibility

clonality

Specific immune cells such as B cells make a huge impact on the immune response, in part because of their ability to rapidly clone themselves, a characteristic called clonality.

The characteristic of adaptive immunity by which the adaptive immune response acts against one molecular shape and no others is called _____.
specificity
inducibility
memory
clonality

specificity

Specificity provides the specific immune response with a precisely tailored reaction against specific attackers.

Red blood cells express which of the following on their surfaces?
neither MHC class I nor class II
MHC class I only
both MHC class I and class II
MHC class II only

neither MHC class I nor class II

Red blood cells do not have nuclei, so they do not express MHC class I molecules. Additionally, they do not serve as antigen-presenting cells, so they do not express MHC class II molecules.

Which of the following would be unlikely to cause a cell-mediated immune response?
Mycobacterium tuberculosis
Staphylococcus aureus
malignant melanoma
hepatitis B virus

Staphylococcus aureus

Staphylococcus aureus, like all extracellular bacterial pathogens, would be more likely to stimulate a humoral immune response.

Babies that are fed formula instead of being breastfed partially lack which of the following types of immunity?
naturally acquired passive immunity
naturally acquired active immunity
artificially acquired active immunity
artificially acquired passive immunotherapy

naturally acquired passive immunity

Breastfeeding is an important way to transfer naturally acquired passive immunity from a mother to her child.

A physician wants to stimulate immunological memory in a patient. Which of the following types of immunity would be the most useful?
naturally acquired active immunity
naturally acquired passive immunity
artificially acquired passive immunotherapy
artificially acquired active immunity

artificially acquired active immunity

Which of the following is NOT associated with the processing of an endogenous antigen?
Which of the following is NOT associated with the processing of an endogenous antigen?
a Golgi body
endoplasmic reticulum
MHC class I
a phagolysosome

a phagolysosome

Phagolysosomes are associated with the processing of exogenous antigens.

Which of the following is NOT involved in the cell-mediated immune response?
granzyme
B lymphocytes
CD8
CD95

B lymphocytes

B lymphocytes are part of the humoral response, not the cell-mediated response.

After the first class-switch, plasma cells begin making

IgG

Which of the following classes of antibody is most likely to be made by the oldest plasma cell in a population of B cells?
IgG
IgB
IgA
IgM

IgA

Plasma cells begin by secreting IgM, but can class switch and begin making IgG. If they class switch a second time, they can make IgA or IgE.

T-independent humoral immunity can be stimulated only by

certain types of antigens.

T-independent humoral immunity _____.
can be stimulated by any kind of antigen
is rapid
induces strong immunological memory
lasts a long time

is rapid

The speed of T-independent humoral immunity is similar to that of innate immunity.

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