#Question id: 2875
#Unit 2. Cellular Organization
Which of the following statements is/are CORRECT from the following?
I. The chromosome of the small monkey DNA virus SV40 is a circular, double-helical DNA molecule of 5000 bp.
II. The phage Lambda genome is a linear single-stranded molecule in the virion particle.
III. Circular DNA molecules purified from both bacteria and eukaryotes are usually negatively supercoiled, having values of sigma of approximately –0.06.
IV. Prokaryotes have a special type I topoisomerase known as “DNA gyrase” that introduces, rather than removes, negative supercoils.
V. DNA disentanglement, generally catalyzed by a type II topoisomerase, is also required for a successful round of DNA replication and cell division in eukaryotes.
#Question id: 21122
#Unit 12. Applied Biology
#Question id: 4375
#Unit 3. Fundamental Processes
Protein X is found to bind to a certain geneʹs promoter only when substance A is not present. The gene can be transcribed in the presence of both X and A. It is not transcribed in the presence of X alone. Protein X is a/an __. Substance A is a/an __.
#Question id: 12889
#General Aptitude
#Question id: 4164
#Unit 3. Fundamental Processes
Which help cells avoid mis-insertion of amino acids in protein synthesis?