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Enteric Gram-negative rods: Escherichia coli Characteristics Quiz

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Enteric Gram-negative rods: Escherichia coli Characteristics Quiz

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Questions and Answers

Which of the following is a characteristic of Enteric Gram-negative rods?

Optimal growth at 25°C

Non-motile

Anaerobic growth (correct)

Ferment a limited range of carbohydrates

Which group of bacteria does not ferment lactose according to the text?

Escherichia

Klebsiella

Enterobacter

Salmonella (correct)

Which of the following Enterobacteriaceae is motile?

Proteus (correct)

Shigella

Escherichia

Klebsiella

Which of the following is a characteristic of Enterobacteriaceae antigens?

'H' antigen Signup and view all the answers

What is a common feature of Enteric Gram-negative rods regarding spore formation?

Non-spore forming Signup and view all the answers

What is the morphology of Escherichia coli?

Gram-negative rod-shaped Signup and view all the answers

How many layers of peptidoglycan are present in the cell wall of E.coli?

1-2 layers Signup and view all the answers

What makes some strains of E.coli motile?

Presence of fimbriae Signup and view all the answers

Which antigen of E.coli is heat and alcohol labile and is present on the flagella?

Flagellar (H) Antigen Signup and view all the answers

What is the main effect of the heat stable lipopolysaccharide in E.coli?

Endotoxic shock and intravascular coagulopathy Signup and view all the answers