The cell mass can be measured optically by determining the amount of light scattered by a suspension of cells. The measurements are usually at a wavelength of

The cell mass can be measured optically by determining the amount of l

1.	The cell mass can be measured optically by determining the amount of light scattered by a suspension of cells. The measurements are usually at a wavelength of
A.	400-500nm
B.	300-400nm
C.	600-700nm
D.	500-600nm
Answer» D. 500-600nm