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bio > bacteria > Flashcards

bacteria Flashcards

1
Q

Louis Pasteur made vaccine for?

A

Anthrax
Fowl Cholera
Rabies

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2
Q

First microbes were reported by?

A

Anton Wan Leuwenhook

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3
Q

Germ theory of disease was formed by?

A

Robert Koch

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4
Q

Slime is made up of

A

macromolecule

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5
Q

slime protects bacteria against

A

phagocytosis.

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6
Q

capsule of bac made up of?

A

repeating polysaccharide units

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7
Q

cell wall also protects bacteria from

A

osmotic lysis.

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8
Q

Cell wall is only absent in

A

mycoplasmas.

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9
Q

Gram-positive bacteria are stained _

A

purple

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10
Q

Gram-negative bacteria are stained _

A

pink

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11
Q

gram + retain ___ dye

A

primary

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12
Q

Gram - retain __ dye

A

(retain secondary dye) in colour.

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13
Q

number of layers in gram +

A

1

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14
Q

number of layers in - bac

A

2

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15
Q

gram + bacteria is made up of

A

peptidoglycan
teichoic acid
lipoteichoic acid

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16
Q

gram - ‘s chemical composition

A

Lipopolysaccharides
Lipoproteins
Peptidoglycan

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17
Q

Outer membrane in gram positive absent or present

A

absent

18
Q

Outer membrane in gram negative absent or present

A

present

19
Q

Which is more permeable gram positive or negative?

A

gram positive is more permeable

20
Q

plasmid are __ ____ dna molecule

A

circular shaped
double stranded

21
Q

Common waste material of bacteria is?

A

Alcohol, lactic acid and acetic acid.

22
Q

cell membrane of bacteria lacks?

A

sterol

23
Q

ribosome of bacteria is formed of

A

70s subunit

24
Q

flagella originate from?

A

basal body

25
Q

True pili are only present on

A

gram-negative bacteria.

26
Q

_ are involved in conjugation

A

Pilis

27
Q

The cell wall of __ bacteria lacks peptidoglycan

A

archaebacteria

28
Q

They often contain drug resistant, heavy metals, disease and insect resistant genes on them.

A

Plasmid

29
Q

Respiratory enzymes are present on?

A

Mesosomes

30
Q

in photosynthetic autotrophs, the chlorophyll is

A

dispersed in cytoplasm not in chloroplast

31
Q

spirochete is __ respiratory bacteria

A

anaerobic

32
Q

e coli is __ resp bacteria

A

facultive anaerobic

33
Q

pseudomonas is _ respiratory bacteria

A

aerobic

34
Q

campylobacter is __ resp bacteria

A

microaerophilic

35
Q

Certain electromagnetic radiations below __ nm are effective in killing of microorganisms.

A

300

36
Q

__ are in general used for sterilization process.

A

Gamma rays

37
Q

____ can affect auditory nerve thus causing deafness

A

streptomycin

38
Q

cause permanent discoloration of teeth in young children.

A

Tetracycline

39
Q

Which bacterias are considered true prokaryotes?

A

Cyanobacteria

40
Q

Cyanobacteria use ____ as accessory
pigments

A

phycobilins

41
Q

Reserve food material in cyanobacteria is

A

glycogen.

42
Q

What forms water blooms?

A

Cyanobacteria

bio (23 decks)

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