2D chromatography is called that because
a. there are two steps: labeling with a radioactive marker and separation via chromatography.
b. the molecules are separated into a linear arrangement, meaning two dimensions.
c. the process separates the molecules in two directions, first along the x axis and then along
the y axis.
d. two different solutions are used in the paper chromatography process.
e. two different types of radioactive markers must be used.
C
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