Self Evaluation

Q1. Unstructured model can describe:
A    Lag phase of microbial cultivation.
B    Log phase of microbial cultivation.
C    Death phase of microbial cultivation.
D    Both lag phase and log phase of microbial cultivation

Q2. The final electron acceptors in An-aerobic cultivation are:
A    Intermediates of metabolic pathway
B    Substrate
C    Oxygen
D    None of the above

Q3. Fed-batch cultivation is generally applied for:
A    substrate inhibited fermentations
B    product inhibited fermentations
C    both substrate and product inhibited fermentations
D    all kinds of cultivations irrespective of inhibition

Q4. Balanced growth features:
A    Constant values of biomass DNA, RNA etc
B    Constant increase of biomass DNA, RNA etc
C    No increase in biomass
D    None of the above

Q5. D- Sorbitol to L-Sorbose bio-conversion is possible by:
A    Both chemical & microbial processes
B    Microbial cultivation only
C    Chemical process only
D    None of the above

Q6. Batch cultivation features:
A    High non production time and low productivity
B    Low non production time and high productivity
C    High yield and productivity
D    Low yield and high productivity

Q7. Maintenance functions in the cell include:
A    Substrate consumed for turn-over of cell material.
B    Substrate consumed for mobility of the cell.
C    Maintenance of intracellular pH
D    All of the above

Q8. Cell mass is not the true reflection of the cell activity as:
A    It consists of both living as well as dead cells
B    It reflects cell population which are in the different phase of cell cultivation
C    It reflect only the exponential phase cells
D    Both A & B

Q9. Advantage of Unstructured model are:
A    Lumped simple representation of cell activity for the complex metabolic reactions.
B    Easy experimental verifications of its predictions.
C    Its better prediction ability in the dynamic conditions.
D    Both A & B

Q10. The lag phase of the cultivation could be reduced:
A    By taking exponentially growing culture
B    By taking large inoculum size
C    By taking the same medium in the bioreactor as that of the shake flask.
D    All of the above