Chapter 14 – Microbiology – Flashcards

A commensal bacterium

Which of the following statements is true? A. Symbiosis refers to different organisms living together B. Members of a symbiotic relationship cannot live without each other C. A parasite is not in symbiosis with its host D. Symbiosis refers to different organisms living together and benefiting from each other E. At least one member must benefit in a symbiotic relationship

A nonsocomial infection is

The major significance of Koch's work was that

Koch's postulates don't apply to all diseases because

Which of the following diseases is NOT spread by droplet infection?

Mechanical transmission differs from biological transmission in that mechanical transmission

Which of the following definitions is incorrect? A. Endemic - a disease that is constantly present in a population B. Epidemic - fraction of the population having a disease at a specified time C. Pandemic - a disease that affects a large number of people in the world in a short time D. Sporadic - a disease that affects a population occasionally E. Incidence - number of new cases of a disease

Which of these infections can cause septicemia?

Which type of infection can be caused by septicemia?

Koch observed Bacillus anthracis multiplying in the blood of cattle. What is this condition called?

Which one of the following does NOT contribute to the incidence of nosocomial infections?

Transient microbiota differ from normal microbiota because transient microbiota

Which of the following statements about nosocomial infections is false?

One effect of washing regularly with antibacterial agents is the removal of normal microbiota. This can result in

Which of the following is NOT a reservoir of infection?

Which of the following is NOT a communicable disease?

Which of the following is a fomite?

Which of the following statements about biological transmission is false?

Which of the following definitions is incorrect? A. Acute - a short-lasting primary infections B. Inapparent - infection characteristic of a carrier state C. Chronic - a disease that develops slowly and lasts for months D. Primary infection - an initial illness E. Secondary infection - a long lasting disease

Symptoms of disease differ from signs of disease in that symptoms

The science that deals with when diseases occur and how they are transmitted is called

Figure 14.1 shows the incidence of influenza during a typical year. Which letter on the graph indicates the endemic level?

Emergence of infectious diseases can be due to all of the following EXCEPT

Which of the following pairs is mismatched? A. Malaria - vector B. Salmonellosis - vehicle transmission C. Syphilis - direct contact D. Influenza - droplet infection E. All of the above are correctly matched

Which of the following can contribute to postoperative infections?

In Figure 14.2, what is the endemic level of rotavirus infections?

A cold transmitted by a facial tissue is an example of

Influenza transmitted by an unprotected sneeze is an example of

A sexually transmitted disease is an example of

Gastroenteritis acquired from roast beef is an example of

A needlestick is an example of

Legionellosis transmitted by a grocery store mist machine is an example of

Plague transmitted by a flea is an example of

The most likely mode of transmission of pneumonic plague between humans is

Situation 14.1 is an example of

In Situation 14.1, the etiologic agent of the disease is

In Situation 14.1, the method of transmission of this disease was

Which one of the following is NOT an example of microbial antagonism?

The yeast Candida alicans does not normally cause disease because of

Haemophilus bacteria require heme protein produced by Staphylococcus bacteria. This is an example of

Which one of the following is NOT a zoonosis?

Pseudomonas bacteria colonized the bile duct of a patient following his liver transplant surgery. This is an example of a

The graph in Figure 14..3 shows the incidence of polio in the United States. The period between 1945 and 1955 indicates

Which one of the following statements is false? A. Antimicrobial therapy for hemodialysis-associated infections increases antibiotic resistance B. S. aureus is differentiated from other mannitol + cocci by the coagulase test C. The M in MRSA stands for mannitol D. USA100 accounts for most hospital-acquired MRSA E. USA300 accounts for most community-acquired MRSA