Bacterial Growth Cycle Flashcards

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1
Q

cells are depleted of metabolites as the result of unfavorable condition

adaptation to new environment

vigorous metabolic activity occurs but cells do not divide

ZERO growth rate

A

LAG PHASE (PHASE 1)

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2
Q

rapid cell division occurs

B-lactam antibiotics act during this phase

CONSTANT growth rate

A

LOG/EXPONENTIAL PHASE (PHASE 2)

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3
Q

Exhaustion of nutrients or the accumulation of toxic products cause growth to cease completely (ZERO GROWTH RATE)

SPORES are formed

A

STATIONARY PHASE (PHASE 3)

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4
Q

Most of the cells DIE because nutrients have been exhausted

NEGATIVE growth rate

A

DECLINE OR DEATH PHASE (PHASE 4)

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