which statement is correct concerning the relationship between chromosomes and either genes, chromatin, or sister chromatids?

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.

Kinases add - groups to other enzymes. this activities some enzyme while inhibiting other

What type of tree is the tallest tree in the world?