Sputnik 1 was important because it was the first: mission to mars man-made object launched into space manned expedition into the challenger deep submerisble diving machine

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.

This rapid change in species that rarely leaves behind fossil evidence is referred to as

The term facultative anaerobe refers to an organism that