Exponential
Phase in
Growth
of
Microorganism -
Here
the
cells
are
growing
at
a
constant
rate,
is
the
generation
time
(the
time
between
successive
divisions)
is
constant.
This
is
the
only
phase
when
the
population
is
growing
at
a
constant
rate
it
represents
the
maximum.
rate,
and
minimum
generation
time
for
prevailing
conditions.
We
have,
therefore,
autocatalytic
growth,
with
the
rate
of
increase
in
biomass
(x)
and
the
cell
number
(n)
proportional
to
existing
biomass
or
cell
number.
Rate
of
Exchange
of
Biomass
=
dx/dt
= µx
Rate
of
change
of
Cell
Number
=
dn/dt
=
µn
