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Question 20

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What part of defense would likely be affected if the pathogen contained a mutation in it's pathogen-associated molecular patterns (PAMPs)?

Select one:

a. the pathogen would not be able to penetrate the host's physical barriers.

b. the pathogen would be easily recognized by the host's TLRs.

c. the pathogen would secrete greater amounts of toxins.

d. the pathogen might not be recognized by the host.

Question 21

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What role do all antigen-presenting cells (APCs) play?

Select one:

a. synthesis of antibodies

b. activation of T cells

c. phagocytosis of pathogens

d. recognition of epitopes

Question 22

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What type of cells involved in the adaptive immunity response mature in the bone marrow and produce immunoglobins?

Select one:

a. B cells

b. T cells

c. Antigen cells

d. phagocytes

e. Antibody cells

Explanation / Answer

pathogen associated molecular patterns are some specific conserved molecules associated with pathogens. they are specific to pathogens. when they are mutated, the pathogen might not be recognized by the host.

APCs such as macrophages, dendritic cells and B cells process antigens and present a small portion of it on their surface to be recognized by a T cell. dendritic cells phagocytose pathogens, whereas B cells take up antigens. all of the APCs are involved in presenting the antigens to T cells and activation of T cells.

immunoglobulins are produced only by B cells.

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