What is the function of messenger RNA (mRNA) in cells?

How is the DNA double helix stabilized? ( here consider both the strands of DNA) 

What factor recognizes stop codons in prokaryotes and triggers the release of the polypeptide chain?

In the context of DNA melting, which region of a DNA molecule would separate first upon heating?

Which elongation factor is responsible for translocating tRNA during protein synthesis, and what energy molecule does it use?

Which of the following statements correctly describes the role of phosphodiester bonds in nucleic acids?

During elongation of the polypeptide chain

The acceptor end of tRNA ends in ____ , and the 3′ end is _____. 

The modified bases pseudouracil, inosine are responsible for 

Northern Equipment Rentals Ltd. owns only one asset in a particular CCA class. At the beginning of the year, the class has an undepreciated capital cost of $70,000. The asset originally cost $100,000. During the year, Northern sells the asset to an unrelated purchaser for $42,000. No other property remains in the class at year-end, and Northern makes no acquisitions in the class during the year. Ignoring GST/HST and selling costs, what is the principal income-tax consequence arising from the CCA class?