Question 1

The vast majority of new HIV infections are in people under the age of 15.

Accepted Answer

A) True 
 B)False

Question 2

How many different "lines" of antibiotics against TB are there?

Accepted Answer

A)   one
B)   two
C)   three
D)   four
E)   five or moreF) All of the above
G) A) and E)

Question 3

What are fimbriae, and what is their function?

Accepted Answer

A)   They are long, thin appendages that allow bacteria to be motile move) .
B)   They are stiff fibers that allow bacteria to adhere to surfaces.
C)   They are elongated, hollow appendages that allow for the transfer of DNA.
D)   They are small, circular pieces of DNA that frequently contain genes for antibiotic resistance.
E)   They are a thick, gelatinous substance surrounding some bacterial cells that allow them to stick to surfaces and protect them from phagocytic white blood cells.F) D) and E)
G) A) and B)

Question 4

An HIV vaccine would be the cure for AIDS that science has been looking for.

Accepted Answer

A) True 
 B)False

Question 5

Infection with HIV is listed as the cause of death for an AIDS patient.

Accepted Answer

A) True 
 B)False  False

Question 6

What do MDR TB and MRSA have in common?

Accepted Answer

A)   Both are transmitted by mosquitoes.
B)   Both cause tuberculosis.
C)   Both are multidrug-resistant bacteria.
D)   Both have seen their numbers of infections decline dramatically in recent years.
E)   Both are viruses.F) A) and E)
G) C) and D)

Question 7

The envelope of the HIV virus is actually part of the host cell plasma membrane.

Accepted Answer

A) True 
 B)False

Question 8

MRSA can be fatal.

Accepted Answer

A) True 
 B)False

Question 9

AIDS is the new name for what used to be called consumption.

Accepted Answer

A) True 
 B)False

Question 10

Where does the life cycle of the Plasmodium protist take place?

Accepted Answer

A)   in mosquitoes
B)   in humans
C)   in both mosquitoes and humans
D)   in snails
E)   in pigsF) B) and C)
G) A) and E)

Question 11

What are the symptoms of a TB infection?

Accepted Answer

A)   skin rash, fever
B)   opportunistic infections, chronic diarrhea
C)   bad cough, chest pain, coughing up blood or sputum
D)   runny nose, sore throat, postnasal drip
E)   lethargy, general malaiseF) B) and D)
G) B) and E)

Question 12

How does HIV know which cells to infect?

Accepted Answer

A)   It can infect any cell it comes in contact with.
B)   It can only infect cells on surfaces of the body where the temperature is lower.
C)   It can only infect cells that are actively growing and dividing.
D)   It can infect cells with particular surface receptors.
E)   It only infects cells that line the reproductive tract.F) C) and D)
G) A) and E) D

Question 13

Which of the following diseases is not categorized as an opportunistic infection found in AIDS patients?

Accepted Answer

A)   prolonged diarrhea
B)   yeast infections of the mouth or vagina
C)   shingles
D)   Kaposi sarcomaE) B) and D)
F) A) and C) D

Question 14

When penicillin was introduced, how long did it take for penicillin-resistant strains of bacteria to emerge?

Accepted Answer

A)   6 months
B)   1 year
C)   4 years
D)   10 years
E)   25 yearsF) C) and D)
G) B) and D)

Question 15

Why is Helicobacter pylori considered an emerging disease?

Accepted Answer

A)   It is highly resistant to antibiotics.
B)   Ulcers were not known to have an infectious cause until recently.
C)   It is now present on all of the continents.
D)   It can jump from humans to pigs and back again.
E)   It had declined in the 1960s but appears to be back again.F) A) and D)
G) B) and D)

Question 16

Which of the following diseases is considered an emerging disease?

Accepted Answer

A)   SARS
B)   H1N1
C)   H5N1
D)   strep throat
E)   All of these are considered emerging diseases.F) All of the above
G) D) and E)

Question 17

A disease is called an epidemic if people all over the world have the same disease.

Accepted Answer

A) True 
 B)False

Question 18

Most people with malaria exhibit chills and fevers every 48 to 72 hours. This is due to

Accepted Answer

A)   reinfection with new Plasmodium.
B)   the bursting of red blood cells in the body.
C)   the formation of Plasmodium gametes within the body.
D)   the fusion of the male and female Plasmodium gametes to form new organisms.
E)   waves of activity from the body's B and T cells.F) C) and D)
G) A) and B)

Question 19

Which of the following is not a characteristic found in Gram-negative bacteria?

Accepted Answer

A)   Plasmids and antibiotic resistance.
B)   A peptidoglycan cell wall.
C)   An outer membrane composed of lipopolysaccharide.
D)   They Gram stain pink.
E)   A thick peptidoglycan cell wall that stains purple.F) A) and B)
G) B) and D)

Question 20

Which of the following factors is/are helping increase the incidence of emerging diseases?

Accepted Answer

A)   global warming
B)   expansion of range by insect vectors
C)   abuse of antibiotics
D)   poor implementation of vaccination programs
E)   All of these factors are helping increase the incidence of emerging diseases.F) A) and B)
G) A) and C)

Exam 8: Biology of Infectious Diseases

The vast majority of new HIV infections are in people under the age of 15.

Correct AnswerverifiedShow Answer

How many different "lines" of antibiotics against TB are there?

Correct AnswerverifiedShow Answer

What are fimbriae, and what is their function?

Correct AnswerverifiedShow Answer

An HIV vaccine would be the cure for AIDS that science has been looking for.

Correct AnswerverifiedShow Answer

Infection with HIV is listed as the cause of death for an AIDS patient.

Correct AnswerverifiedFalse

What do MDR TB and MRSA have in common?

Correct AnswerverifiedShow Answer

The envelope of the HIV virus is actually part of the host cell plasma membrane.

Correct AnswerverifiedShow Answer

MRSA can be fatal.

Correct AnswerverifiedShow Answer

AIDS is the new name for what used to be called consumption.

Correct AnswerverifiedShow Answer

Where does the life cycle of the Plasmodium protist take place?

Correct AnswerverifiedShow Answer

What are the symptoms of a TB infection?

Correct AnswerverifiedShow Answer

How does HIV know which cells to infect?

Correct AnswerverifiedD

Which of the following diseases is not categorized as an opportunistic infection found in AIDS patients?

Correct AnswerverifiedD

When penicillin was introduced, how long did it take for penicillin-resistant strains of bacteria to emerge?

Correct AnswerverifiedShow Answer

Why is Helicobacter pylori considered an emerging disease?

Correct AnswerverifiedShow Answer

Which of the following diseases is considered an emerging disease?

Correct AnswerverifiedShow Answer

A disease is called an epidemic if people all over the world have the same disease.

Correct AnswerverifiedShow Answer

Most people with malaria exhibit chills and fevers every 48 to 72 hours. This is due to

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic found in Gram-negative bacteria?

Correct AnswerverifiedShow Answer

Which of the following factors is/are helping increase the incidence of emerging diseases?

Correct AnswerverifiedShow Answer

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D

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