What is the building unit that enters the plant cell organelle membranes? A -fatty acids
b -ribose sugar
c -simple lipids
d -nucleic acids

Asegment of dna that codes for rna and a protein is a

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.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above