In a small stream, you pick up a rock and observe many small, flattened worms crawling on its undersurface. You decide that they belong to the phylum Platyhelminthes. To which class do they probably belong?

TLS Online TPP Program

#Question id: 21502

#Unit 12. Biochemical Engineering

Chemostat cultivation is carried out at steady state with a dilution rate of 0.1 h^-1 . Given μm = 1.1 h^-1and Ks=0.1 g/L. What will be steady state substrate concentration?

TLS Online TPP Program

#Question id: 21046

#Unit 12. Biochemical Engineering

An organism obeys Andrews model for growth inhibition with Ks and Ki values of 0.01 g/l and 1.0 g/l respectively. If the substrate is present at an initial concentration of 1.0g/l, the specific growth rate of the culture upon entering log phase would be approximately:

TLS Online TPP Program

#Question id: 21052

#Unit 12. Biochemical Engineering

For a cell growth process, the units for yield, productivity and titre are:

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#Question id: 21054

#Unit 12. Biochemical Engineering

Zymomonas mobilis is cultivated in a 60 l chemostat. The μmax and Ks values are 0.2 h^-1 and 0.5 g l^-1 respectively. The flow rate (l h^-1) required for a steady state substrate concentration of 0.5 g l-1 in the reactor is:

TLS Online TPP Program

#Question id: 21057

#Unit 12. Biochemical Engineering

Two organisms A and B with the same μmax and Yx/s are cultivated independently in batch culture. They have Ks values of 1 g.l-1 and 3 g.l-1 respectively. Given that the initial substrate concentration was 5 g/l, which of the following is TRUE after complete exhaustion of the substrate?

TLS Online TPP Program

#Question id: 20819

#Unit 12. Biochemical Engineering

A microorganism following Monod kinetics is grown in a chemostat with working volume of 5 L and inlet substrate concentration of 1g/L. If the μmax and Ks of the organism are 0.5 h-1 and 0.25g/L respectively, washout occurs when the flow rate (L.h-1) exceeds