Yersinia Pestis

Question 1

Is Yersinia pestis a gram-positive or gram-negative bacterium?

Answer 1

Gram-negative

Question 2

True or False: Yersinia pestis is a rod-shaped bacterium.

Answer 2

True

Question 3

What is the primary mode of transmission of Yersinia pestis to humans?

Answer 3

Flea bites

Question 4

Fill in the blank: Yersinia pestis can be transmitted through ________ contact with infected animals.

Answer 4

direct

Question 5

What type of environment does Yersinia pestis thrive in?

Answer 5

Rodent populations

Question 6

Which animal is a primary reservoir for Yersinia pestis?

Answer 6

Rats

Question 7

What are the three main forms of plague caused by Yersinia pestis?

Answer 7

Bubonic, septicemic, and pneumonic

Question 8

True or False: Yersinia pestis can survive outside a host for extended periods.

Answer 8

False

Question 9

What is the incubation period for Yersinia pestis infection?

Answer 9

Typically 2 to 6 days

Question 10

Multiple Choice: Which of the following is a symptom of bubonic plague? A) Coughing B) Fever C) Rash

Answer 10

B) Fever

Question 11

What is the role of the flea in the life cycle of Yersinia pestis?

Answer 11

Vector for transmission

Question 12

Fill in the blank: Yersinia pestis is classified under the family ________.

Answer 12

Enterobacteriaceae

Question 13

Short answer: What laboratory test is commonly used to identify Yersinia pestis?

Answer 13

Culture and sensitivity testing

Question 14

True or False: Yersinia pestis can be transmitted from person to person.

Answer 14

True (in the case of pneumonic plague)

Question 15

What is the fatality rate of untreated bubonic plague?

Answer 15

About 50-60%

Question 16

Multiple Choice: Which of the following is a treatment for Yersinia pestis infection? A) Antibiotics B) Antivirals C) Antifungals

Answer 16

A) Antibiotics

Question 17

What is the primary prevention method for plague?

Answer 17

Avoiding contact with rodents and fleas

Question 18

Fill in the blank: Yersinia pestis produces ________ that can lead to septicemia.

Answer 18

toxins

Question 19

What is a common complication of untreated septicemic plague?

Answer 19

Organ failure

Question 20

True or False: Vaccines for Yersinia pestis are widely available and effective.

Answer 20

False

Question 21

Short answer: What is the primary method of diagnosing pneumonic plague?

Answer 21

Sputum culture

Question 22

What type of bacteria is Yersinia pestis classified as?

Answer 22

Facultative anaerobe

Question 23

Multiple Choice: Which of the following is NOT a typical symptom of plague? A) Swollen lymph nodes B) Headache C) Blurry vision

Answer 23

C) Blurry vision

Question 24

Fill in the blank: The plague is often associated with ________ outbreaks.

Answer 24

epidemic

Question 25

What is the historical significance of Yersinia pestis?

Answer 25

It caused the Black Death in the 14th century.

Question 26

True or False: Yersinia pestis is resistant to many antibiotics.

Answer 26

False