Flashcards in Bacte Lec - Quiz 2 Deck (44):
1
- media supplemented with serum or sugar to prevent osmotic pressure
-capable of reverting to normal form (Residual) peptidoglycan
L-forms
2
– physical mordant in AF stain
Steam or heat
3
chemical mordant present in carbolfuchsin
Phenol –
4
2 Methods of Acid- Fast Staining
1. Ziehl-Neelsen method– hot, steaming for 5 min
2. Kinyoun method – cold, more than 60 min
5
may be a substitute for methylene blue as counterstain in AF Staining
Malachite green
6
– placed on top of the smear before flooding with carbolfuchsin
Filter paper
7
function of filter paper
-prevents rapid evaporation of dye (dye is not allowed to dry)
8
cells commonly found in clinical specimens because it is the first to react during a bacterial infection
Neutrophils –
9
– round, spherical, shaped like berries or grapes
`
coccus
10
identify species
(flattened on one side like a coffee bean)
Neisseria gonorrhoea
11
multiple planes and form grapelike clusters or broad sheets
staphylococci
12
2 planes remain in groups of 4 (ex. Micrococcus tetragena)
• tetrads:
13
3 planes and remain attached in cubelike groups of 8
• sarcinae
14
example of species with sarcinae arrangement
Sarcina lutea
15
remain in pairs after dividing
diplococci:
16
example of species with diplococci arrangement
(Streptococcus pneumonia/Diplococcus pneumonia)
17
type of cocci arrangement
divide and remain in chain like pattern
streptococci:
18
-usually round but can be oval, elongated, flattened on one side
cocci
19
example of tetrad
Micrococcus tetragena
20
example of streptococci
streptococcus pyogenes
21
Arrangements of bacilli
singly, chains, pairs
22
Gram-positive long bacilli, a common cause of bacterial contamination in laboratories
Bacillus subtilis
23
arrangement of bacillus
may align themselves side by side
palisading
24
example of palisading
Corynebacteria or Corynebacterium diphtheria
25
example of staphylococcus other than staphylococcus aureus
Staphylococcus hominis
26
type of shape
oval and look so much like cocci
coccobacilli
27
example of coccobacilli
Acinetobacter spp.
Acinetobacter baumannii
Bordetella pertussis
28
example of vibrio
Vibrio cholerae
29
Example of spirilla
Leptospira interrogans
Helicobacter pylori
30
Example of spirochetes
Treponema pallidum
31
shape and arrangement of bacteria is determined by
heredity
32
genetically, most bacteria are (number of shapes)
monomorphic
33
what can alter the shape of bacteria
number of environmental conditions
34
bacteria is said to be ____ when it has many shapes
pleomorphic
35
example of pleomorphic
Rhizobium and Corynebacterium
36
bacteria which look like Chinese characters
Rhizobium and Corynebacterium
37
size of bacteria may be measured using a_______
micrometer
38
length of bacteria
2 to 8 um
39
diameter of bacteria
0.2 to 2 um
40
look like curved rods.
vibrios
41
have a helical shape and fairly rigid bodies
spirilla
42
have a helical shape and flexible bodies
spirochetes
43
a genus of halophilic archaea, are rectangular or square and flat
Haloarcula
44