Unit 2.5 Environmental control of metabolism Flashcards

1
Q

Complex growth medium used for microorganisms

A

Beef Extract

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2
Q

The phase at which the death rate of cells exceeds the rate of cell division

A

Death Phase

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3
Q

Growth phase of a microorganism which involves the rapid increase in cell numbers

A

Exponential Growth

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4
Q

The time taken for a microorganism cell to divide

A

Generation Time

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5
Q

A substance which encourages the growth of microorganisms

A

Growth Medium

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6
Q

A substance that causes a gene to be expressed, often leading the the production of an enzyme.

A

Inducer

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7
Q

Earliest growth phase of microorganisms

A

Lag Phase

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8
Q

Exponential phase of microorganism growth

A

Log Phase

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9
Q

Substance that is needed to start a metabolic pathway

A

Precursor

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10
Q

Substance produced during the stationary phase of growth of a culture of microorganisms

A

Secondary metabolites

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11
Q

Phase of microorganism growth during which secondary substances are made

A

Stationary Phase

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12
Q

Conditions which do not contain contaminating microorganisms

A

Sterile

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13
Q

Total number of cells in a culture (Viable and non viable)

A

Total Cell Count

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14
Q

Number of live cells from a total cell count

A

Viable Cell Count

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15
Q

Beef Extract

A

Complex growth medium used for microorganisms

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16
Q

Death Phase

A

The phase at which the death rate of cells exceeds the rate of cell division

17
Q

Exponential Growth

A

Growth phase of a microorganism which involves the rapid increase in cell numbers

18
Q

Generation Time

A

The time taken for a microorganism cell to divide

19
Q

Growth Medium

A

A substance which encourages the growth of microorganisms

20
Q

Inducer

A

A substance that causes a gene to be expressed, often leading the the production of an enzyme.

21
Q

Lag Phase

A

Earliest growth phase of microorganisms

22
Q

Log Phase

A

Exponential phase of microorganism growth

23
Q

Precursor

A

Substance that is needed to start a metabolic pathway

24
Q

Secondary metabolites

A

Substance produced during the stationary phase of growth of a culture of microorganisms

25
Stationary Phase
Phase of microorganism growth during which secondary substances are made
26
Sterile
Conditions which do not contain contaminating microorganisms
27
Total Cell Count
Total number of cells in a culture (Viable and non viable)
28
Viable Cell Count
Number of live cells from a total cell count