Virtual Lab 2 | BCTC

Virtual Lab 2

Parts of the Microscope

Labelled Leica Microscope Parts
lab 2 - Microscope
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Gram Stain

Gram Stain

  • organism: Escherichia coli
  • reaction: gram negative
  •  morphology/arrangement: short bacillus, mostly single

lab 2 - Gram Negative


Gram Stain

  • organism: Bacillus cereus
  • reaction: Gram positive
  • morphology/arrangement: streptobacilli

lab 2 - Gram Positive


Special Stains

Special Stains: Acid-fast stain, demonstrating Mycobacterium

Organism: Mycobacterium smegmatis

lab 2, acid fast stain

Mycobacterium smegmatis detected in a respiratory exudate (pus sample) as the broad clump of tiny, fuchsia-pink rods

Note: the dark blue rods are other bacteria present in the sample


Special Stain: Flagella stain demonstrating amphitrichous arrangement
Organism: representative bacteria

lab 2 - Amphitrichous Flagella

Polar amphitrichous arrangement: yellow  arrowsindicate the two flagella of this organism, one at each end


Capsule Stain

lab 2 - Capsule Stain

Endospore Stain

lab 2 - Endosphere Stain

lophotrichous flagella

lab 2 - lophotrichous Flagella

Monotrichous flagella

lab 2 - Monotrichous Flagella

Peritrichous flagella

lab 2 - Pertrichous Flagella