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Salmonella enterica Typhi Characteristics Quiz

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Salmonella enterica Typhi Characteristics Quiz

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Questions and Answers

What is the Gram stain reaction of Salmonella typhi?

Gram negative (correct)

Gram indeterminate

Gram variable

Gram positive

What is the typical morphology of Salmonella typhi cells?

Cocci in pairs

Filamentous rods

Coccobacilli in chains

Single, paired, and chained rods (correct)

What is the motility characteristic of Salmonella typhi?

Gliding motility

Non-motile

Twitching motility

Motile with flagella (correct)

What is the optimal temperature for the growth of Salmonella typhi?

37°C Signup and view all the answers

What is the optimal pH range for the growth of Salmonella typhi?

pH 7-8 Signup and view all the answers

What is the specific subspecies of Salmonella that is being discussed in the text?

Salmonella typhimurium Signup and view all the answers

Which of the following best represents the serovar of Salmonella discussed?

Typhimurium Signup and view all the answers

What are the growth requirements for Salmonella Typhi mentioned in the text?

Aerobic conditions Signup and view all the answers

Which of the following is a common misconception regarding the growth requirements of Salmonella Typhi?

Requires extreme cold temperatures Signup and view all the answers

What is the purpose of using MacConkey and deoxycholate citrate agar for Salmonella typhi?

To test for lactose fermentation ability Signup and view all the answers

Which media are specifically used to test for the presence of H2S production in Salmonella typhi?

Xylose-lysine and Wilson & Bair agars Signup and view all the answers

What distinguishes Salmonella Typhi from other serovars of Salmonella discussed in the text?

Associated with typhoid fever Signup and view all the answers

What is the purpose of using selective media for Salmonella typhi?

To inhibit the growth of other types of bacteria Signup and view all the answers

What is the purpose of using SS agar (salmonella-shigella agar) for Salmonella typhi?

To differentiate Salmonella from Shigella Signup and view all the answers

Which of the following media would be most suitable for testing the growth of Salmonella typhi in the presence of other Gram-positive bacteria?

MacConkey agar Signup and view all the answers