The Nature Of Infection Flashcards
1
Q
Cytoplasmic membrane features:
A
Energy generation in bacteria
Positive charge
Target of anti microbial agents (e.g ethanol)
2
Q
Gram-positive bacteria:
A
Thick layer of peptidoglycan in cell wall retains primary Gram stain (purple)
3
Q
Gram-negative bacteria:
A
Thinner peptidoglycan layer
Allows crystal violet to wash out and are stained by counterstain (pink)
4
Q
What is a key component of endotoxins?
A
LPS (Lipopolysaccharide)
5
Q
Roles of LPS:
A
- Structural role
- Antigen and bacterial toxin
- Antibiotic uptake, inflammation
6
Q
Factors for Bacterial Growth
A
- Food
- Temperature
- pH
- Osmotic protection
- Oxygen
7
Q
What is multicellularity?
A
Colony development and differentiation
8
Q
What are biofilms?
A
Colonies of bacteria that adhere together and adhere to environmental surfaces
Bacteria inside a biofilm are much more resistant to antimicrobial agents
