Practice Questions

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#Question id: 3865

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

#SCPH05 I Biotechnology

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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#Question id: 4562

#I Life Science/ Life Sciences Group – I-V

Which stratum should contain the greatest proportion of extinct organisms?

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#Question id: 1745

#SCPH01 Biochemistry

On injection into mice, bovine serum albumin conjugated with dinitrophenol (DNP) behaves as a:

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#Question id: 1665

#SCPH01 Biochemistry

The Fab region of an Ig is responsible for:

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#Question id: 14474

#SCPH01 Biochemistry

Probability of getting an even number in a single throw with a die is

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#Question id: 14844

#SCPH06 I Botany

An urn contains 25 balls numbered 1 through 25. Two balls are drawn from the urn with replacement. The probability of getting at least one odd is