Question 1

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.

Question 2

Tuberculoid Hansenʹs 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 3

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 4

Pus formation in skin lesions caused by Staphylococcus aureus infections is in part due to production of

Accepted Answer

A)  coagulase. 
B)  hemolysins. 
C)  leukocidin. 
D)  catalase. 
A)  coagulase. 
B)  hemolysins. 
C)  leukocidin. 
D)  catalase.

Question 5

The HPV vaccine has been recommended for

Accepted Answer

A)  females ages 11-26 only. 
B)  females ages 26-45 only. 
C)  males ages 11-26 only. 
D)  males and females ages 11-26. 
A)  females ages 11-26 only. 
B)  females ages 26-45 only. 
C)  males ages 11-26 only. 
D)  males and females ages 11-26.

Question 6

A frequent symptom of the common cold is

Accepted Answer

A)  nasal discharge. 
B)  fever. 
C)  headache. 
D)  diarrhea. 
A)  nasal discharge. 
B)  fever. 
C)  headache. 
D)  diarrhea.

Question 7

Several strains of ________ cause genital warts and cervical cancer.

Accepted Answer

A)  human papillomavirus 
B)  Neisseria gonorrhoeae 
C)  Chlamydia trachomatis 
D)  HIV 
A)  human papillomavirus 
B)  Neisseria gonorrhoeae 
C)  Chlamydia trachomatis 
D)  HIV

Question 8

The CD4 molecule is

Accepted Answer

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

Question 9

The most common infectious disease is

Accepted Answer

A)  gonorrhea. 
B)  influenza. 
C)  hepatitis. 
D)  the common cold. 
A)  gonorrhea. 
B)  influenza. 
C)  hepatitis. 
D)  the common cold.

Question 10

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 11

The single most important physical sign of primary syphilis is

Accepted Answer

A)  the chancre. 
B)  a skin rash. 
C)  paralysis. 
D)  an acute eye infection. 
A)  the chancre. 
B)  a skin rash. 
C)  paralysis. 
D)  an acute eye infection.

Question 12

The presence of gram-positive diplococci in a sputum sample most likely indicates an infection of

Accepted Answer

A)  Streptococcus pyogenes. 
B)  Streptococcus pneumoniae. 
C)  Corynebacterium diphtheriae. 
D)  Bordetella pertussis. 
A)  Streptococcus pyogenes. 
B)  Streptococcus pneumoniae. 
C)  Corynebacterium diphtheriae. 
D)  Bordetella pertussis.

Question 13

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 14

Individuals who have an active case of tuberculosis may spread the disease simply by ________ uninfected individuals.

Accepted Answer

A)  coughing near 
B)  shaking hands with 
C)  hugging 
D)  sexual contact with 
A)  coughing near 
B)  shaking hands with 
C)  hugging 
D)  sexual contact with

Question 15

Describe the pathogenesis of HIV to explain how the number of CD4 lymphocytes decline in an ongoing HIV infection.

Accepted Answer

HIV commonly infects macrophages first,

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

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 causativ

Question 18

Which disease is the global top infectious disease killer, causing over 1.5 million deaths per year worldwide?

Accepted Answer

A)  diphtheria 
B)  whooping cough 
C)  pneumococcal pneumonia 
D)  tuberculosis 
A)  diphtheria 
B)  whooping cough 
C)  pneumococcal pneumonia 
D)  tuberculosis

Question 19

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 20

Nongonococcal urethritis may be caused by the protozoan ________.

Accepted Answer

A)  Chlamydia trachomatis 
B)  Neisseria gonorrhoaea 
C)  Haemophilus ducreyi 
D)  Trichomonas vaginalis 
A)  Chlamydia trachomatis 
B)  Neisseria gonorrhoaea 
C)  Haemophilus ducreyi 
D)  Trichomonas vaginalis

Exam 30: Person-to-Person Bacterial and Viral Diseases

Which of the following statements is TRUE about HIV infections?

Tuberculoid Hansenʹs disease is caused by the pathogen

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

Pus formation in skin lesions caused by Staphylococcus aureus infections is in part due to production of

The HPV vaccine has been recommended for

A frequent symptom of the common cold is

Several strains of ________ cause genital warts and cervical cancer.

The CD4 molecule is

The most common infectious disease 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 single most important physical sign of primary syphilis is

The presence of gram-positive diplococci in a sputum sample most likely indicates an infection of

Which of the following statements about chlamydial infections is TRUE?

Individuals who have an active case of tuberculosis may spread the disease simply by ________ uninfected individuals.

Describe the pathogenesis of HIV to explain how the number of CD4 lymphocytes decline in an ongoing HIV infection.

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

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

Which disease is the global top infectious disease killer, causing over 1.5 million deaths per year worldwide?

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

Nongonococcal urethritis may be caused by the protozoan ________.

The Microbial World

Microbial Cell Structure and Function

Microbial Metabolism

Molecular Information Flow and Protein Processing

Microbial Growth and Its Control

Microbial Regulatory Systems

Molecular Biology of Microbial Growth

Viruses and Their Replication

Microbial Systems Biology

Viral Genomics, Diversity, and Ecology

Genetics of Bacteria and Archaea

Biotechnology and Synthetic Biology

Microbial Evolution and Systematics

Metabolic Diversity of Microorganisms

Functional Diversity of Microorganisms

Diversity of Bacteria

Diversity of Archaea

Diversity of Microbial Eukarya

Taking the Measure of Microbial Systems

Microbial Ecosystems

Nutrient Cycles

Microbiology of the Built Environment

Microbial Symbioses

Microbial Symbioses with Humans

Microbial Infection and Pathogenesis

Innate Immunity: Broadly Specific Host Defenses

Adaptive Immunity: Highly Specific Host Defenses

Clinical Microbiology and Immunology

Epidemiology

Vectorborne and Soilborne Bacterial and Viral Diseases

Waterborne and Foodborne Bacterial and Viral Diseases

Eukaryotic Pathogens: Fungi, Protozoans, and Helminths

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