Question

question 1 - 3
the biological macromolecules contain hydrogen, oxygen and carbon. however, there are distinguishing features of each. which of the following could be used to differentiate between a carbohydrate and a nucleic acid?
carbohydrate molecules are only found in chains, while nucleic acid molecules only form rings.
carbohydrate molecules have nitrogen atoms, whereas nucleic acids have an attached phosphate group.
carbohydrate molecules have a nitrogen base, whereas nucleic acid molecules have an r - group.
carbohydrate molecules contain only carbon, hydrogen and oxygen atoms, whereas nucleic acid molecules also have a nitrogen base and phosphate group.

Explanation:

Carbohydrates have C, H, O. Nucleic acids have C, H, O, N and P with nitrogen - bases and phosphate groups.

Answer:

D. Carbohydrate molecules contain only carbon, hydrogen and oxygen atoms, whereas nucleic acid molecules also have a nitrogen base and phosphate group.