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BACTERIOLOGY > NUTRITION GROWTH AND GENETICS > Flashcards

NUTRITION GROWTH AND GENETICS Flashcards

1
Q

It is a manner of bacterial cell division where the bacterium splits into two.

A

BINARY FISSION

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2
Q

It is a mound or pile of bacteria
containing millions of cells.

A

COLONY

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3
Q

It refers to the time it takes for one bacterial cell to divide via binary
fission into 2 daughter cells.

A

GENERATION TIME

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4
Q

FORMULA : # of bacterial cells at the end
of the incubation period

A

b

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5
Q

initial number of cells inoculated

A

B

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6
Q

binary fission formula

A

2^n

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7
Q

FORMULA : #of generations

A

n

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8
Q

constant

A

0.301

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9
Q

A word to describe a bacteria that
require complex nutritional
requirements.

A

FASTIDIOUS

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10
Q

A term used to describe bacteria
that require cell culture for growing
in vitro.

A

OBLIGATE INTRACELLULAR

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11
Q

3 MAJOR NUTRIENTS OF BACTERIA

A

-CARBON
-NITROGEN
-ATP

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12
Q

composes 50% of the dry weight of a
bacterium

A

CARBON

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13
Q

used for making cellular constituents

A

CARBON

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14
Q

makes up 14% of the bacterium’s dry weight

A

NITROGEN

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15
Q

used for making proteins and nucleic acids

A

NITROGEN

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16
Q

used for performing cellular functions

A

ATP

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17
Q

4% of the bacterium’s dry weight is made up of:

A

Phosphate
Phospholipids
Sulfur

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18
Q

use for nucleic acid synthesis

A

PHOSPHATE

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19
Q

use for the composition of the cell
membrane

A

Phospholipids

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20
Q

for protein synthesis

A

Sulfur

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21
Q

Other requirements:

A

Na+, K+, Cl-, Ca++
sodium, potassium, chlorine, serum calcium

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22
Q

Carbon dioxide is their main
source of Carbon

A

Autotrophs/Lithotrophs

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23
Q

require ORGANIC substances for
growth

A

Heterotrophs/Organotrophs

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24
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

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25
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

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26
Q

GLUCOSE is the main source of
Carbon

A

Heterotrophs/Organotrophs

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27
Q

all bacteria that inhabit the body are
generally______

A

Heterotrophs/Organotrophs

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28
Q

0-20 deg. C

A

PSYCHROPHILIC

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29
Q

Cold loving bacteria

A

psychrophilic

30
Q

salinity 20%

A

psychrophilic

31
Q

Additional Nutrition for PSYCHROPHILIC BATERIA

A

ammonia and sulfur

32
Q

Psychotrophs grows best____ ref. temperature

A

4 deg.

33
Q

Examples of Psychrophilic bacteria:

A

Listeria monocytogenes
Yersinia enterocolitica

34
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

35
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

36
Q

20-45 deg. C

A

Mesophilic

37
Q

Bacteria that grow at moderate temp.

A

Mesophilic

38
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

39
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

40
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

40
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

41
Q

Optimum temp. for Mesophilic bacteria

A

37 deg. C

42
Q

Most pathogenic bacteria are_____

A

mesophiles

43
Q

50-125 deg. C

A

Thermophilic

44
Q

Heat Loving bacteria

A

Thermophilic

45
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

46
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

47
Q

Organisms that grow at temp. >100 deg. C, commonly seen in hot springs, hydrothermal vents and compost pits.

A

Thermophilic

48
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

49
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

50
Q

Examples of Thermophilic bacteria:

A

Bacillus stereathermophilus
Sulfolobus
Pyrococcus
Pyrodictium
Thermus aquaticus

51
Q

(pH 7.0-7.4) organisms that prefer a neutral to slightly alkaline growth
medium

A

Neutrophiles

52
Q

(pH 2.0-5.0)

A

Acidophiles

53
Q

Acidophiles example:

A

Lactobacillus acidophilus

54
Q

(pH >8.5)

A

Alkaliphiles

55
Q

Alkaliphiles example:

A

Vibrio cholerae

56
Q

types of salinity

A

HALOPHILIC
HALODURIC

57
Q

“halo” means

A

salt

58
Q

organisms that grow best at salty environment (8-10% salt)

A

HALOPHILIC

59
Q

HALOPHILIC example;

A

Vibrio spp.

60
Q

organisms that CAN TOLERATE a salty
environment (7.5% salt)

A

HALODURIC

61
Q

HALODURIC example:

A

Staphylococcus aureus

62
Q

are organisms that survive deep in the ocean or in oil wells where the pressure is HIGH

A

PIEZOPHILES

62
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

62
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

63
Q

Most organisms grow at normal barometric pressure of ______

A

14.7 psi(pounds per square inch)

63
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

63
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

64
Q

autotrophs that obtain energy
from oxidation of inorganic cpds.

A

Chemolithotrophs

64
Q

autotrophs that obtain energy
from light (photosynthesis)

A

Phototrophs

65
Q
A
66
Q
A

BACTERIOLOGY (5 decks)

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