Practice Questions

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#Question id: 3865

Which of the following statements about E. coli RNA polymerase is false?

#SCPH06 I Botany

Core enzyme selectively binds promoter regions, but cannot initiate synthesis without a sigma factor.
RNA polymerase holoenzyme has several subunits.
RNA produced by this enzyme will be completely complementary to the DNA template.
The enzyme adds nucleotides to the 3' end of the growing RNA chain.

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TLS Online TPP Program

#Question id: 15587

#SCPH05 I Biotechnology

Under unaerated conditions in a fermenter, the power consumed by a single impeller is 10 KW and upon changing the agitation rate from 200 to 600 rpm, the new power consumption (KW) would be -----. (Assuming that the power number remains constant)

TLS Online TPP Program

#Question id: 15588

#SCPH05 I Biotechnology

For a Rushton turbine impeller (Reynold’s number greater than 10,000) when RPM is doubled, the power absorption increases by:

TLS Online TPP Program

#Question id: 15589

#SCPH05 I Biotechnology

Reynold’s number is ratio of:

TLS Online TPP Program

#Question id: 15590

#SCPH05 I Biotechnology

Given that Power number is constant; then increasing the RPM of the impeller 3-fold will increase the power consumption due to agitation by:

TLS Online TPP Program

#Question id: 15602

#SCPH01 Biochemistry

The antibiotic erythromycin, the immunosuppressive drug FK506, and the cholesterol-lowering drug lovastatin all belong to which class.

TLS Online TPP Program

#Question id: 15602

#SCPH05 I Biotechnology

The antibiotic erythromycin, the immunosuppressive drug FK506, and the cholesterol-lowering drug lovastatin all belong to which class.