Multiple choice general knowledge science & technology IDENTIFY THE NAME OF FUNCTIONAL GROUP COO- AMIDE AMINO ESTER ACID Reveal answer Fill a bubble to check yourself C Correct answer Explanation The COO- group as part of R-COO-R' is an ester. Esters are formed from the reaction of a carboxylic acid with an alcohol. Amide (A) is -CONH2, amino (B) is -NH2, and acid (D) is -COOH. Esters are known for their pleasant fruity odors.