Answer:
branched chains, linear chains, and bezene rings
Peptide bond joining the amino acid togather
Explanation:
When using chromatography, the 2 solutes in the solvent paper should have different Rf values from the base line to identify them as different compounds.
If they were to have the same speed in the solvent, they would appear as 1 dot instead of 2 separate dots, which is a false reading.
The answer is "because water is produced as a by-product"...the word dehydration should also be a major clue because that means water loss.