Question

The following figure shows the growth of typical microbial culture in batch conditions. What is A, B, C and D?

(a) A-lag phase, B-log phase, C-stationary phase, D-deceleration

(b) A-log phase, B-lag phase, C-stationary phase, D-deceleration

(c) A-deceleration, B-log phase, C-lag phase, D-stationary

(d) A-lag phase, B-log phase, C-deceleration, D-stationary

I got this question in quiz.

Asked question is from Microbial Growth Kinetics topic in chapter Microbial Growth Kinetics of Fermentation Technology

Answer 1

Right choice is (d) A-lag phase, B-log phase, C-deceleration, D-stationary

For explanation: The growth of microbial culture initiates with lag phase followed by a log phase followed by deceleration phase and finally stationary phase. The microorganism has to pass through all these phases for normal metabolism.