What role does nitrogenous bases have in dna and rna

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

What are characteristics of minerals? select 3 choices

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.