Bacterial Growth Cycle Flashcards
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)
2
Q
rapid cell division occurs
B-lactam antibiotics act during this phase
CONSTANT growth rate
A
LOG/EXPONENTIAL PHASE (PHASE 2)
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)
4
Q
Most of the cells DIE because nutrients have been exhausted
NEGATIVE growth rate
A
DECLINE OR DEATH PHASE (PHASE 4)
