Q: Which of the following equations best represents the relationship between fever and prostaglandin synthesis?

$$\text{Fever} \propto \text{Prostaglandin Synthesis}$$

Question 1

Which of the following best describes the role of interferons in innate immunity?

Accepted Answer

Interferons are produced by virus-infected cells and trigger mechanisms in nearby uninfected cells to prevent infection.

Question 2

A patient receives an injection of antibodies against rabies after being bitten by a potentially rabid animal. Which type of immunity is this an example of?

Accepted Answer

Passive artificial immunity

Question 3

Which of the following is NOT a function of inflammation during an immune response?

Accepted Answer

Directly producing antibodies against pathogens

Question 4

Which cell type is responsible for non-selectively killing cancer cells and virus-infected body cells as part of the innate immune response?

Accepted Answer

Natural Killer Cells

Question 5

During the adaptive immune response, which cell is activated after binding to an antigen displayed by a phagocyte?

Accepted Answer

Helper T-cell

Question 6

A child receives a vaccine containing inactivated pathogens. Which type of immunity is being developed?

Accepted Answer

Active artificial immunity

Question 7

Which of the following best explains why fever can be beneficial during an infection?

Accepted Answer

Fever increases the activity of immune cells and inhibits the growth of some pathogens.

Question 8

Which of the following is a chemical barrier involved in innate immunity?

Accepted Answer

Lysozyme in saliva and tears

Question 9

A newborn receives antibodies from its mother through breast milk. This is an example of:

Accepted Answer

Passive natural immunity

Question 10

Which of the following best describes the process of cell-mediated immunity?

Accepted Answer

Cytotoxic T-Lymphocytes directly destroy virus-infected cells, cancer cells, or transplanted cells.

Question 11

If a person is exposed to a pathogen and develops immunity that lasts for years, which type of immunity is this?

Accepted Answer

Active natural immunity

Question 12

Which of the following is a mechanical barrier that helps prevent entry of microbes?

Accepted Answer

Flow of tears

Question 13

What is the primary function of memory B and T cells?

Accepted Answer

To permit a rapid response upon subsequent encounters with the same antigen

Question 14

Which of the following equations best represents the relationship between fever and prostaglandin synthesis?

Accepted Answer

$$	ext{Fever} \propto 	ext{Prostaglandin Synthesis}$$

Question 15

Which of the following drugs would most likely reduce fever by inhibiting prostaglandin synthesis?

Accepted Answer

Ibuprofen

Question 16

A patient with a deficiency in macrophages would most likely have impaired:

Accepted Answer

Phagocytosis of pathogens

Question 17

Which of the following best describes the role of normal flora in innate immunity?

Accepted Answer

Normal flora outcompete newcomers, preventing colonization by pathogens.

Question 18

Which of the following scenarios best illustrates humoral (antibody-mediated) immunity?

Accepted Answer

B cells convert to plasma cells and produce antibodies against a specific antigen.

Question 19

Which of the following is most likely to occur first during the inflammatory response?

Accepted Answer

Release of histamine from mast cells causing vasodilation

Question 20

A patient receives a kidney transplant and develops an immune response against the transplanted organ. Which immune mechanism is primarily responsible?

Accepted Answer

Cell-mediated immunity by cytotoxic T-lymphocytes

Immune System & Resistance to Disease: ANP Study Notes

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