Bacte Lec - Quiz 2 Flashcards Preview

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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

star-shaped bacteria

Stella

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