Question

The maximum growth phase is

• A. Lag phase
• B. Steady phase
• C. Log phase
• D. Senescent phase

Answer 1

The correct option is C Log phase

Bacterial growth is divided into four phases, namely lag phase, log phase, stationary phase and death phase. In lag phase, there is very little or no bacterial growth. In this phase, bacteria are adjusting to environment and synthesizing biochemicals and nutrients. In log phase, the number of bacterial cells doubles at an exponential rate. The maximum growth phase is log phase. In stationary phase, the rate of cell death is equal to the rate of cell division. In death phase, there is decrease in the bacterial population due to lack of nutrients and high toxin concentration.

Thus, the correct answer is option C.