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Bio 480 > Chapter 5: Microbial Growth and Control > Flashcards

Chapter 5: Microbial Growth and Control Flashcards

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Biology 101 flashcards
1
Q

Type of growth where every cell is theoretically identically growing

A

Balanced growth

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2
Q

Phases of cell growth

A

Lag
Exponential
Stationary
Death

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3
Q

Term for optical density

A

Turbidity

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4
Q

Division apparatus

A

Divisome

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5
Q

Major components of divisome

A

Fts proteins, like FtsZ

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6
Q

Direct methods of growth measurement

A
  • Viable/Plate counts
  • Microscope counts
  • Flow cytometry (with Fluorescence-Activated Cell-Counters)
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7
Q

Indirect methods of growth measurement

A
  • Spectrophotometry

- Cell constituents

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8
Q

grow optimally in high temperatures

A

thermophiles

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9
Q

grow optimally in low temperatures

A

psychrophiles

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10
Q

capable of growing at low temperatures but grow better at higher ones

A

pychrotolerant

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11
Q

grow optimally in acidic conditions

A

acidophiles

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12
Q

grow optimally in basic conditions

A

alkaliphiles

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13
Q

grow optimally in mid-range temperatures

A

mesophiles

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14
Q

grow optimally in pH neutral environments

A

neurtophiles

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15
Q

require NaCl for growth

A

halophiles

usually marine organisms

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16
Q

organisms that require oxygen for growth

A

obligate aerobes

17
Q

organisms that have no requirement for oxygen but grow more optimally with it

A

facultative aerobes

18
Q

organisms that require oxygen at lower levels than atmospheric levels

A

microaerophilic aerobes

19
Q

organisms to whom oxygen is toxic

A

obligate anaerobes

20
Q

organisms that grow independently of oxygen

A

aerotolerant anaerobes

21
Q

chemical used to test for oxic and anoxic conditions

A

reducing agent

like thioglycolate

22
Q

sterilization that maintains cell populations

A

bacteriostatic

23
Q

sterilization that kills bacterial cells

A

bacteriocidal

24
Q

sterilization that kills and destroys bacterial cells

A

bacteriolytic

Bio 480 (13 decks)

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