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BIOL325 - Microbiology > Unit 4 - Microbial Growth > Flashcards

Unit 4 - Microbial Growth Flashcards

1
Q

Acidophile

A

Microorganism that grows below pH 4.0.

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2
Q

Aerobe

A

A microorganism that requires oxygen for growth

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3
Q

Anaerobe

A

A microorganism that is unable to use oxygen for growth

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4
Q

Asepsis

A

The prevention of microbial contamination

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5
Q

Colony

A

A visible collection of microbes growing on a nutrient medium

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6
Q

Culture

A

The growth of microorganisms in a liquid or solid medium

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7
Q

Differential medium

A

A solid nutrient base that distinguishes between colonies of microorganisms

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8
Q

Disinfectant

A

A solution that retards the growth of microorganisms, but does not necessarily kill them

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9
Q

Facultative anaerobe

A

A microorganism that is capable of growing in the presence or absence of oxygen

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10
Q

Generation time

A

The time needed for a microbial cell to divide

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11
Q

Germicide

A

A substance that can kill bacteria, but not necessarily their spores

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12
Q

Halophile

A

A microorganism that is capable of growing in high salt concentrations

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13
Q

Mesophile

A

A microorganism that grows in moderate temperatures (25 to 40 Celsius)

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14
Q

Microaerophile

A

A microorganism that grows in very low concentrations of oxygen

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15
Q

Optimum

A

Ideal (optimum) condition

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16
Q

Psychrophile

A

A microorganism that grows in temperature of less than 20 degrees Celsius

17
Q

Psychotroph

A

A microorganism that has an optimal growth temperature of between 0-30 degrees Celsius

18
Q

Selective medium

A

A solid or liquid base that supports the growth of certain microorganisms and suppresses the growth of others

19
Q

Sterilization

A

The process by which microorganisms are killed

20
Q

Thermal death time

A

A minimum time required to kill bacteria in a liquid culture

21
Q

Thermopile

A

A microorganism that is capable of growing at high temperature

BIOL325 - Microbiology (4 decks)

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