Practical 4 Flashcards

1
Q

What is the function of oil immersion?

A

Prevents refraction of light rays so that all light passes directly into objective lens

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2
Q

Colour of gram positive cells

A

Purple

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3
Q

Colour of gram negative cells

A

Pink

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4
Q

What stain stains mycobacteria

A

Acid fast stain

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5
Q

What is the function of fixing smear?

A

Heat causes organisms to adhere firmly to slide

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