A DNA is observed to have a topology Lk=120. Which of the following topological configurations (Lk=Tw+wr) for that DNA molecule would require the action of a topoisomerase?

If you would like 1 point, please select the answer below.

Unusual vaginal bleeding (usually post-menopausal) is the most common sign/symptom of endometrial cancer.

All codons of an mRNA, including “STOP” codons, are recognized using Watson-Crick-Franklin base-pairing interactions with a corresponding tRNA.

Match the type of cancer to the correlating most common presenting sign/symptom.

For Translation, both Prokaryotes and Eukaryotes use base-pairing interactions with a sequence on mRNAs called the “Shine-Delgarno” to determine which start codon to initiate from.

For the Lac operon, a cell grown in “high lactose+no glucose” will have the same lac gene expression as a cell grown in “high lactose+ high glucose”.      

DNA polymerase has a separate “proofreading active site” that can correct mis-incorporated nucleotides, while RNA polymerase performs proofreading at the same active site that is used for polymerization.

Which of the following is NOT TRUE of RNA.

In Prokaryotes, rho-dependent transcription termination involves formation of a hairpin RNA secondary structure.