Explore topic-wise MCQs in Spirochacter and Enterobacteriaceac.

Which of the following serotypes of Salmonella does not produce H$_{2}$S?

Escherichia coli is one of the widely distributed enteric bacteria that cause diarrhea worldwide, name the other common pathogen of diarrheal diseases prevalent in developing countries like India, Nepal, and Bangladesh? Select all the correct answers

Enterobacteriaceae expresses a variety of virulent antigens, all of the following are the antigens, EXCEPT?

Enteroinvasive E. coli (EIEC) are nonmotile, non-lactose, or late lactose fermenters which are predominantly found in developing countries infecting children and travelers. Which of the following infection is similar to EIEC infection?

After the bacteria is ingested, enteropathogenic E. coli (EPEC) attaches to the mucosal cells of the small intestine which results in malabsorption and diarrhea.

Symptoms such as watery diarrhea, vomiting, non-bloody stools could appear which may last for 1-3 days. What are the two important virulent factors of pathogenesis?

Enteric bacteria are mainly classified based on their ability to ferment various sugars including lactose. Which of the following bacteria is a non-lactose fermenter?

All are the important general characteristics of enteric bacteria, EXCEPT?

Intestines of humans and other mammals are the natural habitats of enteric organisms, a large family of bacteria is present as a normal flora, which of the following is less likely to be found as the normal flora of the intestine?

Some enteric bacteria are a part of normal inhabitants and incidentally cause disease but others such as.................is an important pathogen and the common cause of foodborne and waterborne illnesses all around the world.

The biochemical properties of enteric bacteria are helpful in the differentiation of the specific pathogen, which of the following biochemical test method demonstrates the production of tryptophan into indole?

Yersinia enterocolitica and Y. pestis can be differentiated on the basis of which of the following tests?

The technique(s), used for the assay of heat-labile enterotoxin produced by Escherichia coli, is/are

Selective media for the isolation of Shigella is

Which of the following species/subspecies of Klebsiella produce indole?

Species of Shigella which is predominant in India is

Which of the following Shigella spp produces a heat-labile exotoxin that affects both the gut and central nervous system resulting in diarrhea and meningismus?

S. enteritidis and S. typhimurium causes enterocolitis and gastroenteritis in humans. What is the most common food for the transmission of this infection?

The symptoms of typhoid fever develop in one to three weeks after exposure to S. typhi, which of the following is the least common symptom?

Which type of salmonellae is primarily infectious for humans?

E. coli is one of the most common enteric bacteria in urinary tract infection (UTI) followed by Proteus mirabilis. All of the following are the cultural characteristics of Proteus mirabilis, EXCEPT?

Which of the following is a rapid lactose fermenter, motile enteric bacteria, and is the major cause of a broad range of hospital-acquired infections such as pneumonia, urinary tract infections, and wound and device infections?

Shigellosis is caused by Shigella dysenteriae in humans causing fever, abdominal cramps, diarrhea sometimes with blood. The infection is attributed to the ........................ activity of Shiga toxin which increases the severity by tissue invasion in the large intestine.

Salmonella typhi enter the human body through an oral route penetrating into the intestine, reaching the lymphatics and the bloodstream that ultimately cause the infection known as "Typhoid". Which of the following is most likely the area where the pathogenesis occurs?

Enterotoxigenic E. coli (ETEC) produces two major types of toxins, heat-labile (LT) and heat-stable (ST) toxins. LT or cholera-like toxin activates adenylate cyclase (cAMP) whereas ST activates................... that causes Travelers diarrhea.

All of the following statements regarding coliform bacteria are true, Except?

Salmonella typhi and S.paratyphii are the two major pathogens that cause enteric fever, which of the following are Not the possible specimen taken for the routine diagnosis of the disease?

Cholera is a virulent disease that is most prevalent in Asia, mainly affecting children under 5 and older people, according to WHO there have been more than 5 pandemics reported in history. Select all the correct statements regarding prevention and control that helps to reduce the spread of the disease in children.

Choose all the correct answers, what are the most common mode of transmission of enteric bacteria?

Heat-labile enterotoxin of Escherichia coli activates

Heat-stable enterotoxin of Escherichia coli activates

The reaction(s) that is/are usually positive in Escherichia coli, is/ are

An enrichment medium for the isolation of Shigella is

In the Widal test, the significant titers for H agglutinins is

Which of the following(s) bacteria belong to the family Enterobacteriaceae?

Dysentery may be caused by

The Widal test is used for the detection of Salmonella typhi and other subspecies. This test is based on the principle.........................................?

Which of the following culture media is not the selective media used for the isolation of salmonellae and shigellae?

The bloody dysentery epidemics occurred in different parts of India during the 1980s. Name the predominant pathogen identified during the dysentery outbreaks in India in the 2000s

Transmission of the pneumonic plague from man to man is through

The most popular method for typing of Pseudomonas aeruginosa is