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Gram-Negative Bacteria Practical Session

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Gram-Negative Bacteria Practical Session

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Questions and Answers

What is the typical color of Pseudomonas aeruginosa colonies on agar plates?

Pink

Yellow

Green (correct)

Blue

Which test is used to confirm the colony of Neisseria?

Urease test

Oxidase test (correct)

Pyocyanin production test

Lactose fermentation test

What is the characteristic of Pseudomonas aeruginosa on MacConkey agar?

Yellow colony

Mucoid colony

Pink colony

Pale colony (correct)

Which of the following bacteria is a human opportunistic pathogen?

Pseudomonas aeruginosa Signup and view all the answers

Which of the following is NOT a characteristic of Pseudomonas aeruginosa?

Lactose fermentation Signup and view all the answers

What is the characteristic of Proteus on nutrient agar and blood agar?

Swarming Signup and view all the answers

What is the shape of G-ve bacilli under the microscope?

Rod Signup and view all the answers

What is the function of the oxidase test?

To detect cytochrome oxidase Signup and view all the answers

Which of the following bacteria is a non-lactose fermenter?

Pseudomonas aeruginosa Signup and view all the answers

Which of the following bacteria produces a pink colony on MacConkey agar?

E. coli Signup and view all the answers