During lag phase, which describes bacterial behavior?

• A. Cells begin rapid division
• B. Bacteria do not grow - they adjust to environment and begin DNA replication
• C. Bacteria reproduce rapidly
• D. Bacteria die due to waste

Answer: (B)

During lag phase, bacteria are metabolically active but not increasing in number. They’re adapting to the new environment, adjusting their enzymes and transport systems, repairing any damage, and starting DNA replication so they’re prepared to divide when conditions are favorable. Because there isn’t yet net growth in cell numbers, this description fits best. The other statements describe phases where cells are actively dividing (rapid/reproducing) or dying due to waste and nutrient depletion, which happen after the lag phase.