BMS 127 Ch. 20 Pathogenic Gram-negative Cocci and Bacilli

Question 0

What is the only genus of Gram-negative cocci that causes significant disease in humans?

Answer 0

Neisseria

Question 1

What does the presence of lipid A in the outer membranes of Gram-negative bacteria affect?

Answer 1

The formation of blood clots in the host.

Question 2

Which of the following bacterial cells is most likely to be virulent?

a. a cell with fimbriae and LOS
b. a cell with a polysaccharide capsule and lipooligosaccharide
c. a cell with fimbriae, lipooligosaccharide, and a polysaccharide capsule
d. a cell with fimbriae but no capsule

Answer 2

c. a cell with fimbriae, lipooligosaccharide, and a polysaccharide capsule

Question 3

Which of the following statements is true?

a. PID is a severe type of diarrhea in which infection spreads from intestines to the bloodstream
b. PID can result from Neisseria infection
c. PID is more common in men than women
d. Members of the family Enterobacteriaceae usually cause PID

Answer 3

b. PID can result from Neisseria infection

Question 4

What is a coliform bacterium that contaminates dairy products?

Answer 4

Enterobacter

Question 5

Why are capsules from enteric bacteria virulence factors?

Answer 5

Because they protect the bacteria from phagocytosis and antibodies

Question 6

What bacteria is responsible for the formation of petechiae in the host?

Answer 6

Neisseria meningitidis

Question 7

What does the pathogen Haemophilus influenzae b cause?

Answer 7

meningitis in children

Question 8

Which of the following diseases is typically mild?

a. Brazilian purpuric fever
b. bartonellosis
c. pediatric meningitis
d. cat scratch disease

Answer 8

d. cat scratch disease

Question 9

What bacterium causes infections in many burn victims?

Answer 9

Pseudomonas aeruginosa

Question 10

Which of the following is a bile-tolerant anaerobe?

a. Bacterioides
b. Escherichia coli
c. Shigella
d. Prevotella

Answer 10

a. Bacterioides

Question 11

What disease is caused by the following bacteria:

Escherichia coli

Answer 11

Gastroenteritis

Question 12

What disease is caused by the following bacteria:

Klebsiella pneumoniae

Answer 12

Pneumonia

Question 13

What disease is caused by the following bacteria:

Proteus mirabilis

Answer 13

Kidney stones

Question 14

What disease is caused by the following bacteria:

Salmonella enterica (serotype Typhi)

Answer 14

Typhoid fever

Question 15

What disease is caused by the following bacteria:

Shigella flexneri

Answer 15

Purulent bloody stools, cramps, fever, and diarrhea

Question 16

What disease is caused by the following bacteria:

Yersinia pestis

Answer 16

Bubonic plague