When growing bacteria why does it grow in the same amounts?

When growing bacteria, they typically multiply at a consistent rate during the exponential phase of growth, where each bacterium divides into two roughly every 20 minutes under optimal conditions. This uniform growth occurs because all cells are exposed to the same nutrients, temperature, and environmental conditions, leading to synchronized division. As a result, the bacterial population increases exponentially, appearing to grow in the same amounts over successive time intervals. However, growth can slow or stop when nutrients are depleted or waste products accumulate.