Question 1

Encapsulated strains of Streptococcus pneumoniae are particularly pathogenic,because they

Accepted Answer

A)  produce exotoxin A. 
B)  produce exotoxin B. 
C)  are potentially very invasive. 
D)  produce M protein surface antigens. 
A)  produce exotoxin A. 
B)  produce exotoxin B. 
C)  are potentially very invasive. 
D)  produce M protein surface antigens. C

Question 2

A sudden onset of a headache,vomiting,and a stiff neck are all symptoms of meningococcal meningitis.

Accepted Answer

A) True 
 B)False  True

Question 3

Reassortment of the genes of the influenza virus is facilitated by the fact that the genome is segmented.

Accepted Answer

A) True 
 B)False  True

Question 4

The CD4 molecule is

Accepted Answer

A)  an HIV surface glycoprotein. 
B)  a cell-surface protein receptor for HIV. 
C)  found only on T-helper cells. 
D)  an HIV surface glycoprotein that is found only on T-helper cells. 
A)  an HIV surface glycoprotein. 
B)  a cell-surface protein receptor for HIV. 
C)  found only on T-helper cells. 
D)  an HIV surface glycoprotein that is found only on T-helper cells.

Question 5

Describe which diseases human papillomavirus (HPV)can cause in males and females.What is the most common symptom of HPV infection,and why is this of concern?

Accepted Answer

Females infected with HPV can develop ce

Question 6

The unique antigenic determinants of the 90 serotypes of Streptococcus pneumoniae are found

Accepted Answer

A)  on the cell-surface M proteins. 
B)  on the capsular polysaccharides. 
C)  in the bacterial cell wall. 
D)  in the inclusions in the periplasmic space. 
A)  on the cell-surface M proteins. 
B)  on the capsular polysaccharides. 
C)  in the bacterial cell wall. 
D)  in the inclusions in the periplasmic space.

Question 7

Salt in mannitol salt agar inhibits the growth of Staphylococcus aureus.

Accepted Answer

A) True 
 B)False

Question 8

Viral hepatitis can result in acute kidney disease,followed by chronic kidney disease.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is NOT a staphylococcal disease?

Accepted Answer

A)  acne 
B)  boils 
C)  strep throat 
D)  meningitis 
A)  acne 
B)  boils 
C)  strep throat 
D)  meningitis

Question 10

MOST of the early cases of toxic shock syndrome in women were associated with use of highly absorbent tampons.

Accepted Answer

A) True 
 B)False

Question 11

The availability of rapid antigen detection (RAD)systems for pathogenic streptococci has eliminated the need to culture Streptococcus pyogenes.

Accepted Answer

A) True 
 B)False

Question 12

Whooping cough is frequently observed in

Accepted Answer

A)  elderly residents of nursing homes. 
B)  individuals with compromised immunity. 
C)  children under 6 months of age. 
D)  health care providers. 
A)  elderly residents of nursing homes. 
B)  individuals with compromised immunity. 
C)  children under 6 months of age. 
D)  health care providers.

Question 13

Which of the following microbial groups is MOST resistant to desiccation due to their cell wall?

Accepted Answer

A)  gram-positive 
B)  gram-negative 
C)  mycoplasmas 
D)  viruses 
A)  gram-positive 
B)  gram-negative 
C)  mycoplasmas 
D)  viruses

Question 14

The most prevalent human infectious diseases are caused by

Accepted Answer

A)  bacteria. 
B)  viruses. 
C)  fungi. 
D)  protozoans. 
A)  bacteria. 
B)  viruses. 
C)  fungi. 
D)  protozoans.

Question 15

The causative agent of Hansen's disease is

Accepted Answer

A)  Mycobacterium marinum. 
B)  Mycobacterium ulcerans. 
C)  Mycobacterium hansen. 
D)  Mycobacterium leprae. 
A)  Mycobacterium marinum. 
B)  Mycobacterium ulcerans. 
C)  Mycobacterium hansen. 
D)  Mycobacterium leprae.

Question 16

Staphylococcus aureus produces ________,an enzyme that results in the accumulation of fibrin around the bacterial cells.

Accepted Answer

A)  coagulase 
B)  collagenase 
C)  lipase 
D)  M protein 
A)  coagulase 
B)  collagenase 
C)  lipase 
D)  M protein

Question 17

Tuberculoid Hansen's disease is caused by the pathogen

Accepted Answer

A)  Listeria monocytogenes. 
B)  Mycobacterium leprae. 
C)  Mycobacterium tuberculosis. 
D)  either Mycobacterium leprae or Mycobacterium tuberculosis. 
A)  Listeria monocytogenes. 
B)  Mycobacterium leprae. 
C)  Mycobacterium tuberculosis. 
D)  either Mycobacterium leprae or Mycobacterium tuberculosis.

Question 18

Why do powerful antibiotics not always remove the cause of meningitis if the disease is caused by Neisseria meningitidis?

Accepted Answer

N.meningitides is not the only causative

Question 19

Which of the following is/are used to identify methicillin-resistant Staphylococcus aureus?

Accepted Answer

A)  selective media 
B)  differential media 
C)  PCR 
D)  selective media, differential media, and PCR 
A)  selective media 
B)  differential media 
C)  PCR 
D)  selective media, differential media, and PCR

Question 20

Which of the following statements is TRUE about HIV infections?

Accepted Answer

A)  The viral nucleocapsid of the virus enters the host cell when the viral and host membranes fuse. 
B)  T-helper cells are greatly reduced in number. 
C)  The cDNA can integrate into the host chromosome. 
D)  All of these statements are true. 
A)  The viral nucleocapsid of the virus enters the host cell when the viral and host membranes fuse. 
B)  T-helper cells are greatly reduced in number. 
C)  The cDNA can integrate into the host chromosome. 
D)  All of these statements are true.

Exam 29: Person-To-Person Bacterial and Viral Diseases

Encapsulated strains of Streptococcus pneumoniae are particularly pathogenic,because they

A sudden onset of a headache,vomiting,and a stiff neck are all symptoms of meningococcal meningitis.

Reassortment of the genes of the influenza virus is facilitated by the fact that the genome is segmented.

The CD4 molecule is

Describe which diseases human papillomavirus (HPV)can cause in males and females.What is the most common symptom of HPV infection,and why is this of concern?

The unique antigenic determinants of the 90 serotypes of Streptococcus pneumoniae are found

Salt in mannitol salt agar inhibits the growth of Staphylococcus aureus.

Viral hepatitis can result in acute kidney disease,followed by chronic kidney disease.

Which of the following is NOT a staphylococcal disease?

MOST of the early cases of toxic shock syndrome in women were associated with use of highly absorbent tampons.

The availability of rapid antigen detection (RAD)systems for pathogenic streptococci has eliminated the need to culture Streptococcus pyogenes.

Whooping cough is frequently observed in

Which of the following microbial groups is MOST resistant to desiccation due to their cell wall?

The most prevalent human infectious diseases are caused by

The causative agent of Hansen's disease is

Staphylococcus aureus produces ________,an enzyme that results in the accumulation of fibrin around the bacterial cells.

Tuberculoid Hansen's disease is caused by the pathogen

Why do powerful antibiotics not always remove the cause of meningitis if the disease is caused by Neisseria meningitidis?

Which of the following is/are used to identify methicillin-resistant Staphylococcus aureus?

Which of the following statements is TRUE about HIV infections?

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