Practice Questions

TLS Online TPP Program

#Question id: 3762

Why does a new DNA strand elongate only in the 5' to 3' direction during DNA replication?

#Section 3: Genetics, Cellular and Molecular Biology

DNA polymerase begins adding nucleotides at the 5' end of the template.
The polarity of the DNA molecule prevents addition of nucleotides at the 3' end.
Replication must progress toward the replication fork.
DNA polymerase can add nucleotides only to the free 3' end.

More Questions

TLS Online TPP Program

#Question id: 19994

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Quantification of reassociation/annealing of various part of DNA is called

TLS Online TPP Program

#Question id: 20007

#Section 5: Bioprocess Engineering and Process Biotechnology

A fed-batch reactor initially contains 2 litre of medium. If it was fed at 1 litre per hour, then after 10 hours, the volume of the reactor will be

TLS Online TPP Program

#Question id: 20008

#Section 5: Bioprocess Engineering and Process Biotechnology

In a glucose-yeast extract medium, Lactococcus lactis has a maximum specific growth rate (um) of 1.23 h^-1. What would be the specific growth rate of this organism at steady state in a 4 litre reactor being fed at 2 litres per hour?

TLS Online TPP Program

#Question id: 20009

#Section 5: Bioprocess Engineering and Process Biotechnology

In a plug flow reactor, the highest concentration of substrates is exposed to the cells that

TLS Online TPP Program

#Question id: 20010

#Section 5: Bioprocess Engineering and Process Biotechnology

In an activated sludge process, the biomass is recycled to

TLS Online TPP Program

#Question id: 20011

#Section 5: Bioprocess Engineering and Process Biotechnology

A strain of Escherichia coli has a maximum specific growth rate of 0.8 h^-1 on a glucose based medium. If this organism is being grown in a chemostat with a dilution rate of 1.2 h^-1, then at steady state the concentration of E. coli in the same medium will