A premature stop codon results in a nonsense mutation in Class I phenotypes. The result is a shortened and basically useless CFTR. Some drugs have been proposed to ignore the premature stop signal and continue with full-length protein production. Considering a mutated mRNA being delivered to the ribosome, how might this treatment be effective

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.