Which makes up the mobile phase used in gas chromatography
a. liquid nitrogen
b. silica gel
c. filter paper
d. a gas

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because

What goes in and out of a cell respiration?