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Microbio:Bact Struct

USMLE Step 1

BacteriaBacterial structure
Mycoplasma dont have a cell wall nor peptidoglycan, just has a membrane w/ cholesterol
Chlamydia dont have peptidoglycan in cell wall
Gram-negative thin peptidoglycan wall encased by outer membrane w/ LPA that is lipid A an endotoxin, the outer membrane has porins
Gram-positive thick peptidoglycan wall & techoic acid that attracts TNF & IL-1
Spores contain dipicolinic acid that can survive for thousands of years
Capsule layer of meshed molecules around the bacterium, external to its cell wall, another type of outer covering is known as a slime layer
Cx important encapsulated bacteria Streptococcus pneumoniae, Neisseria meningitidis, Haemophilus influenzae
Mycobacteria have waxy cell walls containing mycolic acid
Created by: jerrica_08