Multiple choice

Bacteria which retains the purple colour after staining with Gram stain is

  1. gram positive

  2. gram negative

  3. trichous

  4. spirillum

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gram positive bacteria retains the purple colour of the crystal violet stain. This retention is facilitated by the thick peptidoglycan layer in their cell wall.