Flashcards in Lecture 5 Deck (51):
Name the three basic forms of bacteria
name 3 forms of coccus bacteria
Name a bacteria that is diplococci
What do cooci look like?
What do bacilli look like?
What form are bacteria in the palisade arrangement?
Name 6 bacteria which are bacilli
Which bactera is in the palisade arrangement?
What do streptococci look like?
chains of cocci
What do staphylococci look like?
clusters of cocci
What does the pallisade arrangement look like?
a picket fence
What shape are neisseria?
What shape is anthrax?
what shape is e. coli?
What shape is syphillis?
What shape is cholera?
Vibrio bacteria are of what form?
What shape is tetnus?
What shape is diptheria?
what shape is lyme disease?
What shape are spirochetes?
Wat is the difference between vibrios and spirochetes regarding their shape?
vibrios do not complete a full revolution of their spiral
spirochetes contain at least one full spiral
What form/shape of bacteria is the smallest in volume?
How big are cocci?
what form/shape of bacteria have the largest volume?
What are the average dimensions of a bacilli?
0.5 micrometers x 2 micrometers
What are the average dimensions of spirochetes?
.5 micrometers x 1 to 14 micrometers
What is the glycocalyx?
outermost wall of bacteria
is non living
What are the 2 forms the glycocalyx may come in?
slime layer and capsule
What bacteria have a slime layer?
What bacteria have a capsule?
(must name all 5)
Which is thicker:
a slime layer OR a capsule?
What type of glycocalyx does nosocomial pneumonia have?
What does haemophillis influenzae cause?
AND the flu
What is the chemistry of the slime layer?
poly peptide saccharides
What 2 factors determine if a slime layer is formed?
Genetics and nutrition
What do capsules look like on a colony?
mucus on the plate
What does a slime layer look like on a colony?
wet and shiny
How do you stain klebsiella to see the capsule under a microscope?
stain the organism with crystal violet then use with india ink
What would a properly stained slide look like if you had stained to see the capsule?
What are the 3 levels of identification?
enzymes at the biochemical level
What are serovars?
A group of closely related microorganisms distinguished by a characteristic set of antigens
What is the significance of serology when making vaccenes?
There are many serovars for the disease you're vaccinating against, but you only really need to include the most common strains in your vaccine
What aids the formation of microcolonies?
what is the significance of microcolonies?
only the outer bacteria die off, the inner ones are protected against dryness and chemicals
they are harder for white blood cells to engulf
What chemical does streptococcus pyogenes use to hide in the human body?
What is the function of hyaluronic acid?
in the human body it keeps our cells stuck together
streptococcus pyogenes uses this to its advantage to camouflage itself in the body
Which organism uses hyaluronic acid to hide in the body?
How do capsules relate to virulence?
organisms with capsules are more virulent
Which organism uses its capsule to attach to intubation and catheters?