Question

rna, like dna, is a nucleic acid made of a long chain of nucleotides. but there are three important differences between rna and dna:

• the 5 - carbon sugar in rna is ribose instead of deoxyribose.
• rna has a nitrogenous base called uracil instead of thymine.
• rna is usually single - stranded, not double - stranded.

put each diagram in the correct column.

Explanation:

• For RNA:
• Check for ribose (the sugar). The first diagram has ribose (with two - OH groups on the sugar ring) and the third diagram also has ribose. Also, check for uracil. The third diagram has uracil.
• For DNA:
• Check for deoxyribose (the sugar with one - OH group on the sugar ring). The second and fourth diagrams have deoxyribose. Adenine and guanine can be in both DNA and RNA, but the sugar type is the key here.

Answer:

• RNA: First diagram (has ribose), Third diagram (has ribose and uracil)
• DNA: Second diagram (has deoxyribose), Fourth diagram (has deoxyribose)