Thursday 29 December 2011

How bacteria growth?

GROWTH OF BACTERIA:
            Bacteria have a large surface area to volume ration and therefore gain food sufficiently        rapidly from their environment by diffusion and active transport mechanism.therefore provided condition are suitable.they can grow very rapidly
four different phases are recognized in bacterial growth curve.
1: LAG PHASE:  
                          Inactive phase or phase during which bacteria prepare themselves for division.
2:LOG PHASE:
                                     Bacteria grow and multiply very rapidly.
3:STATIONARY PHASE:
                                  Bacterial multiplication is equal to death rate.
4:DEATH/DECLINE PHASE:
                       Death rate is more rapid than multiplication rate.     
                               
                           

What is bacteria ?

BACTERIA 
                  "Bacteria are smallest and simplest living organism having cellular structure"