AP BIOLOGY

Detailed explanation-1: -The log phase of bacterial growth is followed by the stationary phase, in which the size of a population of bacteria remains constant, even though some cells continue to divide and others begin to die.

Detailed explanation-2: -Stationary phase is the stage when growth ceases but cells remain metabolically active. Several physical and molecular changes take place during this stage that makes them interesting to explore. The characteristic proteins synthesized in the stationary phase are indispensable as they confer viability to the bacteria.

Detailed explanation-3: -In the stationary phase, growth reaches a plateau as the number of dying cells equals the number of dividing cells. The death phase is characterized by an exponential decrease in the number of living cells.

Detailed explanation-4: -Lag phase: bacteria initially adjust to the new environment, so they appear not able to replicate but the cells might grow in volume; Log (exponential) phase: cells start dividing regularly by the process of binary fission.

Detailed explanation-5: -What are the 4 phases of the bacterial growth curve? The bacterial growth progresses in four phases namely – lag phase, log phase, stationary phase and death phase.