One cell roughly doubles in volume, contents, and divides into 2 cells. Batch Growth Curve reflects behavior of a population, not that of an individual cell. Lag may be quite long when stationary phase cells are transferred to fresh medium or when cells in a rich medium are transferred to a nutrient-poor medium. Growth slows as wastes accumulate, nutrients are depleted.
Death rate is greater than growth rate.
Cell lysis may occur. Plot of cell number as a function of time is an exponential curve, not a straight-line. Average growth rate is easily calculated during the exponential phase of growth. Relative rate of synthesis is same as growth rate. This is not so.