Microbiology Flashcards
1
Q
Spherical shaped bacteria
A
Coccus
2
Q
Rod-shaped bacteria
A
Bacillus
3
Q
Spiral/corkscrew shaped bacteria
A
Spirillum
4
Q
What is Gram staining
A
Staining cell walls of bacteria
5
Q
What colour does gram staining stain gram-positive bacteria and why?
A
Purple because their cell walls retain crystal violet
6
Q
What colour does gram staining stain gram-negative bacteria and why?
A
Red by the counterstain as their cell walls don’t retain crystal violet
