Practice Questions

TLS Online TPP Program

#Question id: 2659

The correct option regarding the lac operon in E.coli from the following is

#XL - T Zoology

Lac operon is switched on in the absence of lactose
Lac repressor binds to the lac promoter
β-galactosidase is the only enzyme produced in large quantities when lac operon is turned on
lac operon messenger RNA is a polycistronic mRNA

More Questions

#Question id: 820

#XL - Q Biochemistry

The protein unfolding or protein denaturation is

#Question id: 4957

#XL - T Zoology

How many half-lives should have elapsed if 6.25% of the parent isotope remains in a fossil at the time of analysis?

#Question id: 11155

#XL - S Microbiology

Nucleic acid sequences that undergo few changes over the course of evolutionary time are said to be conserved. Conserved sequences of nucleic acids

#Question id: 3743

#XL - Q Biochemistry

In DNA repair, DNA glycosylases recognize deaminated bases within the DNA polymer and remove the deaminated

#Question id: 1703

#XL - Q Biochemistry

Which of the following statements is TRUE about an epitope?