Question

Which growth phase is characterized by the most rapid increase in cell number and maximal metabolic activity?

• A. Lag phase
• B. Log (exponential) phase
• C. Stationary phase
• D. Death phase

Hint:

The log phase is the key to understanding growth rates and nutrient consumption in bacterial cultures.

Answer 1

The Correct Option is B

The log (or exponential) phase is characterized by the most rapid increase in cell number and maximal metabolic activity. During this phase, cells are actively dividing and using nutrients at a high rate. The lag phase is a period of adaptation, the stationary phase occurs when nutrient levels deplete and cell growth slows, and the death phase is when cells start to die due to lack of resources.