Question 1

All of the following are considered portals of entry for a pathogen, EXCEPT

Accepted Answer

A)  through the skin or by direct contact 
B)  ingestion through contaminated food or water 
C)  inhaled through the mouth or nose 
D)  ingestion through uncontaminated food or water 
A)  through the skin or by direct contact 
B)  ingestion through contaminated food or water 
C)  inhaled through the mouth or nose 
D)  ingestion through uncontaminated food or water D

Question 2

Approximately what percentage of people with hepatitis C in Canada do now know they have it?

Accepted Answer

A)  50% 
B)  20% 
C)  35% 
D)  10% 
A)  50% 
B)  20% 
C)  35% 
D)  10% C

Question 3

Immunization is based on the

Accepted Answer

A)  introduction of helper T cells into the body. 
B)  introduction of an unrelated pathogen into the body to stimulate antigen production. 
C)  body's ability to differentiate a harmful pathogen from a harmless one. 
D)  body's ability to remember an encounter with a specific antigen. 
A)  introduction of helper T cells into the body. 
B)  introduction of an unrelated pathogen into the body to stimulate antigen production. 
C)  body's ability to differentiate a harmful pathogen from a harmless one. 
D)  body's ability to remember an encounter with a specific antigen. D

Question 4

One of the best ways to break the chain of infection is to

Accepted Answer

A)  use disinfectant agents when cleaning your house. 
B)  drink water only if it is fluoridated. 
C)  get boosters for immunizations 6 months early. 
D)  wash your hands frequently. 
A)  use disinfectant agents when cleaning your house. 
B)  drink water only if it is fluoridated. 
C)  get boosters for immunizations 6 months early. 
D)  wash your hands frequently.

Question 5

The release of histamines does NOT cause in the affected area.

Accepted Answer

A)  infection 
B)  heat 
C)  swelling 
D)  redness 
A)  infection 
B)  heat 
C)  swelling 
D)  redness

Question 6

An organism that causes disease is a(n)

Accepted Answer

A)  pathogen. 
B)  toxin. 
C)  antigen. 
D)  antibody. 
A)  pathogen. 
B)  toxin. 
C)  antigen. 
D)  antibody.

Question 7

All of the following are symptoms usually present in someone with a common cold, EXCEPT:

Accepted Answer

A)  runny, stuffy nose. 
B)  fever. 
C)  muscle aches. 
D)  fatigue. 
A)  runny, stuffy nose. 
B)  fever. 
C)  muscle aches. 
D)  fatigue.

Question 8

All of the following are symptoms usually present in someone with influenza, EXCEPT:

Accepted Answer

A)  fever. 
B)  cough. 
C)  sneezing. 
D)  muscle aches. 
A)  fever. 
B)  cough. 
C)  sneezing. 
D)  muscle aches.

Question 9

A person who is exposed to a disease and who is subsequently injected with antibodies produced by others has been given

Accepted Answer

A)  passive immunity. 
B)  natural immunity. 
C)  innate immunity. 
D)  active immunity. 
A)  passive immunity. 
B)  natural immunity. 
C)  innate immunity. 
D)  active immunity.

Question 10

Chemicals responsible for the dilation and increased permeability of blood vessels in allergic reactions are called

Accepted Answer

A)  antigens. 
B)  antibodies. 
C)  histamines. 
D)  lymphocytes. 
A)  antigens. 
B)  antibodies. 
C)  histamines. 
D)  lymphocytes.

Question 11

White blood cells that directly destroy virus-infected and cancerous cells are _________ cells.

Accepted Answer

A)  suppressor T 
B)  natural killer 
C)  helper T 
D)  B 
A)  suppressor T 
B)  natural killer 
C)  helper T 
D)  B

Question 12

Molds, mushrooms, and yeasts belong to which classification?

Accepted Answer

A)  spirochete 
B)  protozoa 
C)  fungi 
D)  prions 
A)  spirochete 
B)  protozoa 
C)  fungi 
D)  prions

Question 13

Prions are similar in makeup to spirochetes.

Accepted Answer

A) True 
 B)False

Question 14

Lymph nodes

Accepted Answer

A)  produce enzymes in the lymph. 
B)  are part of the respiratory system. 
C)  are where macrophages congregate and filter pathogens from the lymph. 
D)  produce antibodies and antigens. 
A)  produce enzymes in the lymph. 
B)  are part of the respiratory system. 
C)  are where macrophages congregate and filter pathogens from the lymph. 
D)  produce antibodies and antigens.

Question 15

Varicella-zoster virus causes which of the following conditions?

Accepted Answer

A)  shingles 
B)  chicken pox and shingles 
C)  measles 
D)  chicken pox 
A)  shingles 
B)  chicken pox and shingles 
C)  measles 
D)  chicken pox

Question 16

Approximately what percentage of Canadians have ulcers?

Accepted Answer

A)  2% 
B)  10% 
C)  5% 
D)  17% 
A)  2% 
B)  10% 
C)  5% 
D)  17%

Question 17

All of the following are symptoms rarely present in someone with sinusitis, EXCEPT:

Accepted Answer

A)  fatigue. 
B)  muscle aches. 
C)  sneezing. 
D)  headache. 
A)  fatigue. 
B)  muscle aches. 
C)  sneezing. 
D)  headache.

Question 18

Tears, saliva, and vaginal secretions are rich in ________ and that break down and destroy many microorganisms.

Accepted Answer

A)  macrophages; killer T-cells 
B)  antibodies; enzymes 
C)  lymphocytes; neutrophils 
D)  histamines; antigens 
A)  macrophages; killer T-cells 
B)  antibodies; enzymes 
C)  lymphocytes; neutrophils 
D)  histamines; antigens

Question 19

The antibody most involved in triggering an allergic reaction is

Accepted Answer

A)  gamma globulin. 
B)  immunoglobulin E. 
C)  a mast cell. 
D)  histamine. 
A)  gamma globulin. 
B)  immunoglobulin E. 
C)  a mast cell. 
D)  histamine.

Question 20

Lymphocytes that produce antibodies are called cells.

Accepted Answer

A)  helper T 
B)  killer T 
C)  B 
D)  suppressor T 
A)  helper T 
B)  killer T 
C)  B 
D)  suppressor T

Exam 9: Immunity and Infection

All of the following are considered portals of entry for a pathogen, EXCEPT

Approximately what percentage of people with hepatitis C in Canada do now know they have it?

Immunization is based on the

One of the best ways to break the chain of infection is to

The release of histamines does NOT cause in the affected area.

An organism that causes disease is a(n)

All of the following are symptoms usually present in someone with a common cold, EXCEPT:

All of the following are symptoms usually present in someone with influenza, EXCEPT:

A person who is exposed to a disease and who is subsequently injected with antibodies produced by others has been given

Chemicals responsible for the dilation and increased permeability of blood vessels in allergic reactions are called

White blood cells that directly destroy virus-infected and cancerous cells are _________ cells.

Molds, mushrooms, and yeasts belong to which classification?

Prions are similar in makeup to spirochetes.

Lymph nodes

Varicella-zoster virus causes which of the following conditions?

Approximately what percentage of Canadians have ulcers?

All of the following are symptoms rarely present in someone with sinusitis, EXCEPT:

Tears, saliva, and vaginal secretions are rich in ________ and that break down and destroy many microorganisms.

The antibody most involved in triggering an allergic reaction is

Lymphocytes that produce antibodies are called cells.

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