Examveda
Examveda

A batch culture fermentation was being conducted with Streptomyces rimosus, Analysis of samples collected indicated doubling of cell number per unit time. Your interference would be that the culture is in the

A. Lag phase

B. Log phase

C. Stationary phase

D. Death phase

Answer: Option B


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Related Questions on Bioprocess Engineering and Process Biotechnology

During cultivation of microorganisms in a fermenter, various parameters are controlled by appropriate sensor (probe). Match each probe in Group I with the appropriate response mechanism in Group II.

Group I (Probe) Group II (Response)
P. Thermistor 1. Activation of acid/alkali pump
Q. Oxygen electrode 2. Activation of vegetable oil pump
R. Metal rod 3. Activation of hot/cold water pump
S. pH electrode 4. Increase/decrease in stirrer motor speed

A. P-2, Q-3, R-1, S-4

B. P-1, Q-2, R-4, S-3

C. P-3, Q-2, R-4, S-1

D. P-3, Q-4, R-2, S-1