Question

complete the chart on the three chemical differences between dna and rna.
structure | 1. strand of nucleotides | 2. sugar | 3. nitrogen base
--- | --- | --- | ---
dna | | |
rna | | |

Explanation:

This chart compares the key chemical structural differences between DNA and RNA, based on core molecular biology principles:

1. DNA forms a double-stranded helix, while RNA is typically single-stranded.
2. The sugar in DNA lacks an oxygen on the 2' carbon, making it deoxyribose; RNA uses ribose, which has this oxygen.
3. Both use adenine, guanine, and cytosine, but DNA uses thymine as its fourth base, while RNA uses uracil instead.

Answer:

Structure	DNA	RNA
2. sugar	Deoxyribose	Ribose
3. nitrogen base	Adenine, Guanine, Cytosine, Thymine	Adenine, Guanine, Cytosine, Uracil