the nature of infection Flashcards
describe the cytoplasmic membrane
there is energy generation in bacteria, which is a positive charge
- common antimicrobial agents (such as ethanol) are targeted
decribe gram-positive bacteria
thick layer of peptidoglycan in cell wall retains primary Gram stain (purple)
describe gram-negative bacteria
thinner peptidoglycan layer, allows crystal violet to wash out and are stained by counterstain (pink)
what is Lipopolysaccharide (LPS)
A Key component of endotoxin (part of outer membrane of cell wall in Gram-negative bacteria)
what kind of role does LPS do
a structural role
what else does LPS do
- Antigen and bacterial toxin
- Antibiotic uptake, inflammation
what are the factors needed for bacterial growth
- Food
- Temperature
- pH
- Osmotic protection
- Oxygen
what are the phases in bacteria growth
-lag phase
-exponential phase
-stationary phase
-decline phase
what do nucleotides do
they are circular and target drugs which could potentially
what is multicellularity
colony development and differentiation
what is a biofilm
colonies of bacteria that adhere together and adhere to environmental surfaces
what happens to bacteria inside a biofilm
they are much more resistant to antimicrobial agents
