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General Microbiology > Microorganism in the Environment > Flashcards

Microorganism in the Environment Flashcards

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Biology 101 flashcards
1
Q

Bacteria reproduce by splitting into two is known as

A

binary fission

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2
Q

one kind of bacteria in a culture media

A

pure culture

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3
Q

culture media selective to grow specific organism

A

selective media

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4
Q

indicators that they are producing acids/alkalines

A

dyes

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5
Q

is useful in isolation and differentiation of the various gram-negative bacilli and enteric bacilli, generally known as coliforms and fecal coliforms respectively.

A

acyl methylene blue agar

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6
Q

Invasion of a host by a microorganism with subsequent establishment and multiplication of the agent.

A

infection

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7
Q

accidental transfers of organisms from one natural environment to another.

A

contamination

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8
Q

Sources of infectious agents / contaminants are humans, animals and non-living materials.

A

contamination

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9
Q

is an individual mass of bacterial growth on the surface of the agar.

A

colony

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10
Q

All the bacteria in a ____came from one single bacteria, and thus all are identical to one another.

A

colony

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11
Q

when grown on a medium, shows specific growth appearance or characteristics.

A

bacterium

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12
Q

It varies with the type of agar/broth medium, nutrients, and dyes present in the medium

A

colony

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13
Q

different forms of bacteria

A

punctiform
circular
irregular
filamentous
rhizodal

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14
Q

identify different forms of bacteria

A

+1

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15
Q

margins of bacteria

A

entire
lobate
filamentous
curled
undulate

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16
Q

identify margins of bacteria

A

+1

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17
Q

elevation of colony

A

flat
raise
convex
umbunate
crateriform
pulvinate

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18
Q

identify elevation of colony

A

+1

19
Q

surface of colony

A

smooth
concentric
contoured
wrinkled

20
Q

identify surface of colony

A

+1

21
Q

pigmentation can be

A

pigmented
nonpigmented

22
Q

optical features of colony

A

transparent
opaque
translucent
opalescent

23
Q

consistency of colony

A

dry
brittle
buttery/butyrous
viscid/muscoid

24
Q

The most rapid cell growth occurs at the colony ___ where larger amount of required resources are available

A

edge

25
Q

Growth is much slower in the ___, and cell autolysis takes place in the older central portions of some colonies

A

center

26
Q

takes place in the older central portions of some colonies.

A

cell autolysis

27
Q

bacillus subtilis development identify

A

+1

28
Q

Staphylococcus aureus

A

+1

29
Q

e coli

A

+1

30
Q

Micrococcus luteus

A

+1

31
Q

Pink color of bacteria indicates a

A

lactose fermenter

32
Q

used for the isolation of gram-negative enteric bacteria and the differentiation of lactose fermenting from lactose non- fermenting gram-negative bacteria

A

MacConkey’s Agar

33
Q

s a growth media for the culturing of moderately to non fastidious bacteria

A

Trypticase Soy Agar

34
Q

pseudomonas aeruginosa

A

+1

35
Q

It is often a nosocomial pathogen, easily transmitted by hands and invasive medical procedures

A

pseudomonas aeruginosa

36
Q

Temperature-regulated phenotypic expression
- the red pigment ___ is produced in response to incubation at 30o C, but do not do so at 37o C.

A

prodigiosin

37
Q

serratia marcescens

A

+1

38
Q

the ability to cause disease.

A

pathogenicity

39
Q

The ability of an organism to invade host tissues and cause disease

A

virulence

40
Q

Colonies that are smooth and viscid due to their

A

capsules

41
Q

evade phagocytosis and therefore can wander in our body without being detected by macrophages

A

capsules

42
Q

capsule production of B. anthracis

A

poly-d-glutamate

43
Q
A

General Microbiology (25 decks)

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