Question 1

Isonicotinic acid hydrazide (INH)is an antibiotic used in the treatment of tuberculosis.It affects the synthesis of

Accepted Answer

A) mycolic acid. 
B) linoleic acid. 
C) globular proteins of the cell membrane. 
D) DNA transcription. 
A) mycolic acid. 
B) linoleic acid. 
C) globular proteins of the cell membrane. 
D) DNA transcription. A

Question 2

The causative agent of streptococcal pharyngitis,also known as "strep throat," is

Accepted Answer

A) Streptococcus pyogenes. 
B) Streptococcus pneumoniae. 
C) Streptococcus mutans. 
D) Streptococcus lactis. 
A) Streptococcus pyogenes. 
B) Streptococcus pneumoniae. 
C) Streptococcus mutans. 
D) Streptococcus lactis. A

Question 3

Loeffler's medium inhibits the growth of MOST organisms and is commonly used to cultivate

Accepted Answer

A) Corynebacterium diphtheriae. 
B) Mycobacterium tuberculosis. 
C) Mycobacterium leprae. 
D) Staphylococcus aureus. 
A) Corynebacterium diphtheriae. 
B) Mycobacterium tuberculosis. 
C) Mycobacterium leprae. 
D) Staphylococcus aureus. A

Question 4

Which of the following drugs,chemotherapeutic agents against HIV,inhibits reverse transcriptase?

Accepted Answer

A) ampligen 
B) azidothymidine 
C) alpha interferon 
D) soluble CD4 
A) ampligen 
B) azidothymidine 
C) alpha interferon 
D) soluble CD4

Question 5

Impetigo is due to an infection caused by

Accepted Answer

A) Staphylococcus aureus but not Streptococcus pyogenes. 
B) Streptococcus pyogenes but not Staphylococcus aureus. 
C) either Staphylococcus aureus or Streptococcus pyogenes. 
D) neither Staphylococcus aureus nor Streptococcus pyogenes. 
A) Staphylococcus aureus but not Streptococcus pyogenes. 
B) Streptococcus pyogenes but not Staphylococcus aureus. 
C) either Staphylococcus aureus or Streptococcus pyogenes. 
D) neither Staphylococcus aureus nor Streptococcus pyogenes.

Question 6

Rheumatic fever is

Accepted Answer

A) an autoimmune disease. 
B) a poststaphylococcal disease. 
C) triggered by cell-surface antigens on Staphylococcus aureus cells that are similar to heart valve and joint antigens. 
D) caused by human papillomavirus. 
A) an autoimmune disease. 
B) a poststaphylococcal disease. 
C) triggered by cell-surface antigens on Staphylococcus aureus cells that are similar to heart valve and joint antigens. 
D) caused by human papillomavirus.

Question 7

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 8

Influenza A virus can be identified by which of the following surface glycoproteins?

Accepted Answer

A) HA 
B) NA 
C) both HA and NA 
D) M protein 
A) HA 
B) NA 
C) both HA and NA 
D) M protein

Question 9

Which statement is TRUE about Streptococcus pneumoniae and the lung infection it causes?

Accepted Answer

A) Streptococcus pneumoniae can spread from the focus of infection as a bacteremia. 
B) Penicillin and erythromycin are the "last chance" drugs for treatment of streptococcal pneumonia. 
C) Infection with any strain of encapsulated virulent Streptococcus pneumoniae provides long-lasting immunity to all encapsulated virulent strains. 
D) Streptococcal pneumonia is not as serious as most people think; if left untreated,it usually runs its course in about a week to ten days. 
A) Streptococcus pneumoniae can spread from the focus of infection as a bacteremia. 
B) Penicillin and erythromycin are the "last chance" drugs for treatment of streptococcal pneumonia. 
C) Infection with any strain of encapsulated virulent Streptococcus pneumoniae provides long-lasting immunity to all encapsulated virulent strains. 
D) Streptococcal pneumonia is not as serious as most people think; if left untreated,it usually runs its course in about a week to ten days.

Question 10

The DTaP vaccine contains

Accepted Answer

A) purified bacterial DNA. 
B) bacterial endotoxin derivatives. 
C) heat-killed Bordetella pertussis cells. 
D) diphtheria toxoid. 
A) purified bacterial DNA. 
B) bacterial endotoxin derivatives. 
C) heat-killed Bordetella pertussis cells. 
D) diphtheria toxoid.

Question 11

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 12

Erythromycin is put in the eyes of newborns specifically to prevent

Accepted Answer

A) syphilis. 
B) gonorrhea. 
C) a chlamydial infection. 
D) ocular herpes. 
A) syphilis. 
B) gonorrhea. 
C) a chlamydial infection. 
D) ocular herpes.

Question 13

The Spanish flu of 1918 was caused by an ________ influenza virus.

Accepted Answer

A) H2N1 
B) H5N1 
C) H1N1 
D) H2N2 
A) H2N1 
B) H5N1 
C) H1N1 
D) H2N2

Question 14

Infections by "flesh-eating bacteria" can occur when exotoxins A,B,C,and E and the bacterial surface M protein of Streptococcus pyogenes act as superantigens.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following does NOT apply to bacterial pathogens affecting the respiratory tract?

Accepted Answer

A) Humans are the only reservoir for most bacterial respiratory pathogens. 
B) Most are normally transmitted person to person. 
C) Some often initiate secondary infections that can be life threatening. 
D) Most respiratory bacterial pathogens do not respond to antibiotic therapy. 
A) Humans are the only reservoir for most bacterial respiratory pathogens. 
B) Most are normally transmitted person to person. 
C) Some often initiate secondary infections that can be life threatening. 
D) Most respiratory bacterial pathogens do not respond to antibiotic therapy.

Question 16

Patients infected with Mycobacterium tuberculosis in environments where drug resistance is expected or has already been identified usually have to take antibacterial drugs for six months to ensure the infectious agent is completely killed.

Accepted Answer

A) True 
 B)False

Question 17

The pink-red rash of scarlet fever may be caused by streptococcal pyrogenic exotoxins A,B,C,and E,which are coded for on a lysogenic bacteriophage.

Accepted Answer

A) True 
 B)False

Question 18

The influenza viral envelope is unique because it contains only one type of protein.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following statements about chlamydial infections is TRUE?

Accepted Answer

A) Chlamydial diseases are not reportable diseases. 
B) Chlamydial diseases are less prevalent than gonorrhea. 
C) Chlamydial diseases can lead to acute complications. 
D) All of the statements are true. 
A) Chlamydial diseases are not reportable diseases. 
B) Chlamydial diseases are less prevalent than gonorrhea. 
C) Chlamydial diseases can lead to acute complications. 
D) All of the statements are true.

Question 20

A patient with AIDS often dies of a variety of infections caused by opportunistic microorganisms.

Accepted Answer

A) True 
 B)False

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

Isonicotinic acid hydrazide (INH)is an antibiotic used in the treatment of tuberculosis.It affects the synthesis of

The causative agent of streptococcal pharyngitis,also known as "strep throat," is

Loeffler's medium inhibits the growth of MOST organisms and is commonly used to cultivate

Which of the following drugs,chemotherapeutic agents against HIV,inhibits reverse transcriptase?

Impetigo is due to an infection caused by

Rheumatic fever is

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

Influenza A virus can be identified by which of the following surface glycoproteins?

Which statement is TRUE about Streptococcus pneumoniae and the lung infection it causes?

The DTaP vaccine contains

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

Erythromycin is put in the eyes of newborns specifically to prevent

The Spanish flu of 1918 was caused by an ________ influenza virus.

Infections by "flesh-eating bacteria" can occur when exotoxins A,B,C,and E and the bacterial surface M protein of Streptococcus pyogenes act as superantigens.

Which of the following does NOT apply to bacterial pathogens affecting the respiratory tract?

Patients infected with Mycobacterium tuberculosis in environments where drug resistance is expected or has already been identified usually have to take antibacterial drugs for six months to ensure the infectious agent is completely killed.

The pink-red rash of scarlet fever may be caused by streptococcal pyrogenic exotoxins A,B,C,and E,which are coded for on a lysogenic bacteriophage.

The influenza viral envelope is unique because it contains only one type of protein.

Which of the following statements about chlamydial infections is TRUE?

A patient with AIDS often dies of a variety of infections caused by opportunistic microorganisms.

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