The Growth Cycle of populations (a)Lag phase: cells begin to synthesize inducible enzymes and use stored food reserves (b) Logarithmic growth phase: the rate of multiplication is constant (c) Stationary phase: death rate is equal to rate of increase d )Death phase: cells begin to die at a more rapid rate than that of reproductionThe Growth Cycle of Populations (a) Lag phase: cells begin to synthesize inducible enzymes and use stored food reserves. (b) Logarithmic growth phase: the rate of multiplication is constant. (c) Stationary phase: death rate is equal to rate of increase. (d) Death phase: cells begin to die at a more rapid rate than that of reproduction