BACTERIAL GROWTH REQUIREMENTS Flashcards by HANIN MAONG | Brainscape

Q

increase in the number of

cells

A

GROWTH

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Q

structural backbone of all organic

molecules

A

CARBON

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Q

utilize inorganic compounds for

their carbon source

A

AUTOTROPHS

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Q

utilize organic compounds such

as glucose serve as the carbon source of

A

HETEROTROPHS

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Q

energy source

A

sunlight
oxidation of inorganic
substances

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Q

bacterial cell is made up mostly of

WATER

A

MOISTURE

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Q

for optimal growth

A

OXYGEN

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Q

require oxygen

A

AEROBES

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Q

cannot survive in the presence of oxygen

A

ANAEROBES

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Q

can grow in the presence or absence of oxygen

A

FACULTATIVE

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Q

can grow under low oxygen tension but

their rate of growth is diminished

A

Microaerophiles

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Q

require the addition of carbon dioxide to

enhance their growth

A

Capnophiles

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Q

organisms which grow best at 10-20 C

A

Psychrophiles

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Q

organisms which are able to grow at 20-40 C

A

Mesophiles

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Q

Organisms which grow temperature above 40-

60 C

A

Thermophiles

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Q

organisms which grow best at > 100 C

A

Hyperthermophiles

Q

organisms that grow at a low pH ( < 6.0 )

A

Acidophiles

Q

organisms that grow at a neutral pH ( 7.0 – 7.2 )

A

Neutrophiles

Q

organisms that grow at a at high pH

A

Alkalophiles

Q

movement of water from low to high

solute concentration

A

OSMOSIS

Q

organisms that need high osmotic pressure

for maximal growth

A

Osmophiles

Q

organisms that require salt for growth

A

Halophiles

Q

prepare for cell division

A

Lag

Q

active growth

A

Log

Q

Death = Growth rate

A

Stationary

Q

nutrients consumed

A

Death / Decline