Question

In the exponential phase, the cells and cell mass
A.first increases then decreases
B. decreases
C. are constant
D. double at a constant rate

Answer 1

In exponential phase, cells and cell mass double at a constant rate. (option D)

• The growth curve for the growth and multiplication of cells consists of three main phases- the lag phase, the exponential phase and the stationary phase.
• The division and increase in mass of the cells is maximum during the exponential phase. The rate of division and growth is doubled.
• The number of cell divisions comes to a constant during the stationary phase, which later enters the death phase.