Answer:
A. True
Explanation:
If A mixture of three amino acids, Asp, Ala and Arg, placed on a cation-exchange resin containing sulfonate (-SO3-) groups will flow down the column at different rates.
This is because amino acids contain varying proportions of elements and compounds . For example, sulphur composition varies and a cation exchange resin will favor the ones with a higher amount of the element.
