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Microbiology > Lesson 6 > Flashcards

Lesson 6 Flashcards

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Biology 101 flashcards
1
Q

bacteria which gain energy from light, subdivided into two groups on the basis of source of electron

A

Phototrophs

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2
Q

bacteria that uses reduced inorganic compounds such ss H2S as electron source.

A

Photolithotrops

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3
Q

uses organic compounds such as succinate as
electron source.

A

Photoorganotrops

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4
Q

Bacteria which gain energy from chemical compounds and cannot carry out photosynthesis

A

Chemotrophs

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5
Q

they gain energy from oxidation of chemical
compound and reduces inorganic compounds such as NH3 as electron source.

A

Chemolithotrops

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6
Q

they gain energy from chemical compounds and uses organic compound such as glucose and amino acids as source of electron.
.

A

Chemoorganotrops

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7
Q

nonpathogenic, free-living bacteria which uses solar energy or carbon dioxide as sole source of carbon to prepare its own food

A

Autotrophs

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8
Q

They utilized light to assimilate carbon dioxide.

A

Photoautotrops

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9
Q

they utilize chemical energy for assimilation of
carbon dioxide

A

Chemoautotrops

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10
Q
  • bacteria which uses organic compound as carbon source and lack the ability to fix carbon dioxide.
A

Heterotrophs

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11
Q

-. bacteria that can grow at below 0°C to 20°C but the optimum temperature of growth is 15°C or below. It contains polyunsaturated fatty acids in their cell membrane which allows it to not freeze even at lower temperature hence it is a common contaminant in refrigerators.

A

Psychrophiles

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12
Q

bacteria that can grow even between 0°C to 30°C but optimum temperature for growth is 20-30°C

A

psychrotrophs (facultative psychrophiles)

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13
Q

-bacteria that can grow best between 25-40°C and optimum temperature for growth is 37°C.

A

Mesophiles

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14
Q

-bacteria that best grow above 45°C, contains saturated fatty acids in their cell membrane so their cell membrane does not become too fluid even at higher temperature, can survive pasteurization temperature

A

Thermophiles

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15
Q

capable of growing in mesophilic range

A

facultative thermophiles

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16
Q

true thermophiles or Stenothermophiles

A

obligate thermophiles

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17
Q

-bacteria that have optimum temperature of growth above 80°C.

A

Hypethermophiles

18
Q

-bacteria that grows best at acidic pH

-

A

Acidophiles

19
Q

bacteria that grows best at alkaline pH

A

Alkaliphiles

20
Q

bacteria that grows best at neutral pH (6.5-7.5)

A

Neutrophiles

21
Q

-bacteria that require high concentration of sodium chloride (NaCl) for growth.

A

Halophiles

22
Q
  • bacteria that does not require NaCl but can tolerate low concentration of NaCl in growth media
A

Halotolerant

23
Q

-bacteria that requires and cannot grow in the absence of oxygen

A

Obligate aerobes

24
Q

bacteria that do not require oxygen but can use it if available

A

Facultative anaerobe

25
Q

-bacteria that do not require but can tolerate the presence of oxygen for growth

A

Aerotolerant anaerobe

26
Q

-bacteria that do not require but can tolerate low concentration of oxygen growth

A

Microaerophiles

27
Q

bacteria that can grow only in absence of oxygen

A

Obligate anaerobes

28
Q
  • bacteria with single flagellum in one end of cell.
A

Monotrichous

29
Q

bacteria that require carbon dioxide for growth

A

Capnophiles

30
Q
  • belong to a group called prokaryotes
A

kingdom Protista
bacteria
blue-green algae

31
Q
  • belong to a group called eukaryotes
A

fungi
Other algae
slime molds
protozoa

32
Q
  • cell wall of these bacteria is composed of peptidoglycan layer only. The cell wall retains the crystal fire lit or gram stain which appear violate in Gram staining.
A

Gram positive bacteria

33
Q
  • cell wall of these bacteria is composed of Peptidoglycan and outer membrane. The cell wall does not retain the gram stain, but they take up the red color of the counter stain during Gram staining.
A

Gram negative bacteria

34
Q

-Bacteria having bundle of flagella in one end of cell.

A

Lophotrichous

35
Q

-bacteria having single or cluster of flagella at both end of cell.

A

Amphitrichous

36
Q

-bacteria having flagella evenly distributed around the cell surface.

A

Peritrichous

37
Q

-bacteria without flagella.

A

Atrichous

38
Q

-produce spore during unfavorable condition

A

Spore forming bacteria

39
Q
  • spore produced within the bacterial cell.
A

endospore forming bacteria:

40
Q

-spore produced outside the cel

A

exospore forming bacteria

41
Q
  • those bacteria which do not produce spore.
A

non-spore forming bacteria

Microbiology (11 decks)

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