microbrial diversity Flashcards
1
Q
what diameter are most bacteria ?
A
1 micron (um)
1000um = 1mm
2
Q
length of most common rod shaped bacteria
A
2-5um
3
Q
what characteristics of a prokaryote are used to distinguish different prokaryotes
A
cell morphology, colony morphology, gram stain reaction, growth characteristics, biochemical, immunological and dna tests
4
Q
cell morphology
A
shape & size under microscope
prokaryotes generally unicellular spheres, rods, spirals
5
Q
cell arrangements cocci can have
A
diplococci arise when cocci divide and remain together to form a pair.
long chains cocci- streptococci
grape like clusters - staphlococci
6
Q
cell arrangements for bacilli
A
diplobacilli, streptobacilli
7
Q
colony morphology
A
shape, texture and colour of colonies of microorganisms when grown on agar plates
