Lab 3 Flashcards
(9 cards)
1
Q
What are the colours of a gram-positive bacteria in a Gram Stain
A
Purplish-blue
2
Q
What are the colours of a gram-negative bacteria in a Gram Stain
A
Pink-red
3
Q
What does a gram-positive test prove?
A
There is one plasma membrane and a cell wall + peptidoglycan
4
Q
What does a gram-negative test prove?
A
There are two plasma membranes (outer and inner) and cell wall + thin peptidoglycan
5
Q
What are the 3 most common bacteria shapes?
A
- Sphere (Cocci)
- Rod (Bacilli)
- Helical (Spiral)
6
Q
What is a endospore?
A
A tough cell structure that can withstand stand harsh environments
7
Q
What colour do endospores turn in a Spore Stain?
A
Green
8
Q
What is a vegetative cell?
A
A cell that is able to grow and metabolize
9
Q
What colour do vegetative cells turn in a Spore Stain?
A
Pink-red
