Samples of bacterial culture taken at 5 PM and then the next day at 5 AM were found to have 104 and 107 cells.mL 1, respectively. Assuming that both the samples were taken during the log phase of cell growth, the generation time of this bacterium will be _____ h.

Samples of bacterial culture taken at 5 PM and then the next day at 5

1.	Samples of bacterial culture taken at 5 PM and then the next day at 5 AM were found to have 104 and 107 cells.mL 1, respectively. Assuming that both the samples were taken during the log phase of cell growth, the generation time of this bacterium will be _____ h.
A.	1.2121
B.	12121
C.	12.121
D.	121.21
Answer» B. 12121

Discussion

No Comment Found

Related MCQs

Write whether the following statements are true or false : (a) Three important characteristics in performance of biosensors are selectivity, sensitivity and stability (b) Activated sludge process is one of the most common anaerobic sewage treatment method (c) In a fermentor, impellors increase oxygen demand by producing high shear forces. (d) A pressure cycle is a type of air lift fermentor (e) Monoclonal antibodies are used extensively in diagnosis of haematopoietic cancers
Choose the correct completion of the following statement. A fermenter sterilisation in situ is less efficient than continuous heat sterilisation because
In large-scale fermentation, the preferred method of sterilizationsterilization is
The kinetics of the disintegration of baker s yeast cells in a bead mill is described as dp/dt = K. (Pm P), where P is the concentration of protein released and Pm is the maximum protein concentration achievable. K is the first order rate constant and is 0.5 hr 1 for the system studied. The time required for the release of 90% of the intracellular proteins will be
Which of the following statements are true about bioreactors? P. Continuous bioreactors provide less degree of control and uniform product quality than batch bioreactors. Q. Batch bioreactors are ideally suited for reaction with substrate inhibition. R. Choice of a bioreactor is dictated by kinetic considerations. S. Fed batch bioreactors are also called semibatch bioreactors.
A bacterial culture with an approximate biomass composition of CH1.8O0.5N0.2 is grown aerobically on a defined medium containing glucose as the sole carbon source and ammonia being the nitrogen source. In this fermentation, biomass is formed with a yield coefficient of 0.35 gram dry cell weight per gram of glucose and acetate is producedwith a yield coefficient of 0.1 gram acetate per gram of glucose. The respiratory coefficient for the above culture will be
Match the bioreactor components in group 1 with the most appropriate function given in group 2 Group 1 Group 2 P. Marine type impeller 1. Recirculation of medium Q. Draft tube 2. Aeration of medium R. Diaphragm valve 3. Animal cell cultivation S. Sparger 4. Sterile operation
Downstream processing of an industrial process yielded a highly purified bioactive protein. This protein was subjected to cleavage by trypsin. Chromatographic separation of products resulted in 4 peptides (P, Q, R, S) with the following amino acid sequencesP. phe-val-met-val-arg Q. ala-ala-try-gly-lys R. val-phe-met-ala-gly-lys S. phe-gly-try-ser-thr Chemical cleavage of the same protein with cyanogenbromide and chromatographic separation resulted in three peptides (i, ii, iii) with the following sequences (i) ala-gly-lys-phe-gly-try-ser-thr (ii) ala-ala-pry-gly-lys-phe-val-met (iii) val-arg-val-phe-met The order of the peptides that gives the primary structure of the original protein is
Main functions of baffles in a bioreactor are P. to prevent a vortex Q. to increase aeration R. to reduce interfacial area of oxygen transfer S. to reduce aeration rate
The specific growth rate ( ) of a microorganism in death phase is

Samples of bacterial culture taken at 5 PM and then the next day at 5 AM were found to have 104 and 107 cells.mL 1, respectively. Assuming that both the samples were taken during the log phase of cell growth, the generation time of this bacterium will be _____ h.

Discussion

No Comment Found

Related MCQs

Reply to Comment