Question 1

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. 
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. D

Question 2

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

Question 3

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

Accepted Answer

A) True 
 B)False  False

Question 4

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. 
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.

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

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. 
A)  SARS 
B)  H1N1 
C)  H5N1 
D)  strep throat 
E)  All of these are considered emerging diseases.

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

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

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

MRSA can be fatal.

Accepted Answer

A) True 
 B)False

Question 12

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. 
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.

Question 13

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. 
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.

Question 14

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. 
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.

Question 15

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. 
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.

Question 16

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

Question 17

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 malaise 
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 malaise

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  five or more 
A)  one 
B)  two 
C)  three 
D)  four 
E)  five or more

Question 20

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. 
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.

Exam 8: Biology of Infectious Diseases

How does HIV know which cells to infect?

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

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

What do MDR TB and MRSA have in common?

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

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

Which of the following diseases is considered an emerging disease?

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

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

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

MRSA can be fatal.

What are fimbriae, and what is their function?

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

Why is Helicobacter pylori considered an emerging disease?

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

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

What are the symptoms of a TB infection?

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

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

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

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