Bacterial Motility - Lab 10 Questions and Answers (100% Correct Answers)

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Bacterial Motility - Lab 10 Questions and
Answers (100% Correct Answers)
Flagella Prescence
Ans: Bacterial Motility

Polar Arrangement
Ans: Monotrichous

Lophotrichous

Amphitrichous

Monotrichous
Ans: One single polar flagellum.

Lophotrichous
Ans: More that one flagella at a single pole.

Amphitrichous
Ans: One flagellum at each opposing pole.

Peritrichous
Ans: Cell covered in flagella.

Flagella can be found by:
Ans: - Transmission Electron Microscopy

- Flagellar stain: Ryu Stain (Bright-Field light microscope)

*Costly and technically challenging

*Alternative: motility observation

Bacterium Motility can be found by:
Ans: - Wet-mount Preparation (microscopic)

- Motility Media (macroscopic)

Wet-mount Preparation
Ans: Non-heat fixed, non-stained specimen on a concave microscope slide for direct
observation of motile organisms.

*Can be deceptive and Motility can be confused for twitching