Molecular Diversity of Life Questions With Complete
Solutions
Amino group Correct Answers A functional group that consists
of a nitrogen atom bonded to two hydrogen atoms. Aminos are
polar and basic.
Carbonyl group Correct Answers A chemical group present in
aldehydes and ketones and consisting of a carbon atom double-
bonded to an oxygen atom. Carbonyls are polar and are neither
acidic nor basic.
Carboxyl group Correct Answers A functional group present in
organic acids and consisting of a single carbon atom double-
bonded to an oxygen atom and also bonded to a hydroxyl group.
Carboxyls are polar and acidic.
How many single covalent bonds can a carbon atom form?
Correct Answers A carbon atom can form 4 single covalent
bonds.
Hydroxyl group Correct Answers A functional group consisting
of a hydrogen atom joined to an oxygen atom by a polar
covalent bond. Hydroxyls are polar and acidic. Molecules
possessing this group are soluble in water and are called
alcohols.
Methyl group Correct Answers A functional group consisting of
a carbon atom bonded to three hydrogen atoms. Methyls are
polar and acidic.