Structure of DNA Complete the sentences to describe the structure of DNA paralle

Question

Structure of DNA Complete the sentences to describe the structure of DNA parallel DNA is referred to as a strands that are , meaning that it has covalent bonds nitrogen bases phosphate group deoxyribose twisted ribose sugar opposite thymine guanine together. The strands together through of DNA form the rungs, linking the The backbone of DNA is comprised ofsugar and a The strands are oriented in , meaning they are but are directions. similarAdenine is always paired withand cytosine is always paired with antiparallel hydrogen bonds double helix 2

Explanation / Answer

1. DNA is referred to as DOUBLE HELIX, meaning that it has TWO strands that are TWISTED together.

2. The NITROGEN BASES of DNA form the rungs, linking the TWO strands together through HYDROGEN BONDS.

3. The backbone of DNA is comprised of DEOXYRIBOSE sugar and PHOSPHATE.

4. The strands are ANTIPARALLEL, meaning they are PARALLEL but are oriented in OPPOSITE directions.

5. Adenine is always paired with THYMINE and Cytosine is always paired with GUANINE.

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