GUMES microbiology Flashcards
what are the virulence factors on bacteria
fimbriae and flagellum
what do fimbriae increase
adhesion
what do flagellum increase
motility
what is an example of bacilli bacteria
e coli
what is an example of cocci bacteria
staphylococcus aureus
what is an example of spirillus bacteria
helicobacter pylori
what does capnophilic bacteria mean
they need carbon dioxide to survive
what does facultative bacteria mean
they can survive with or without oxygen
what does microaerophilic bacteria mean
they an survive with only a small amount of oxygen
what is the gram stain used for
distinguishing between gram positive and gram negative bacteria
what makes bacteria gram positive
they have a thick layer of peptidoglycan
what are the layers of the outer membrane of gram positive bacteria
plasma membrane
periplasmic space
peptidoglycan
what characterises gram negative bacteria
thin layer of peptidoglycan with an outer layer of lipopolysaccharide
describe the layers of the outer membrane of gram negative bacteria
plasma membrane
periplasmic space
peptidoglycan
periplasmic space
lipopolysaccharide
what causes caries
streptococcus mutans and lactobacilli