Question

describe the structure of dna. be sure to use words like... (underline words)

1. double helix 6. nucleotide
2. adenine 7. base pairing
3. guanine 8. twisted ladder
4. cytosine 9. phosphate
5. thymine 10. deoxyribose

Explanation:

DNA has a double - helix structure, often described as a twisted ladder. It is made up of nucleotides. Each nucleotide consists of a phosphate group, deoxyribose (a sugar), and a nitrogenous base. The nitrogenous bases are adenine, guanine, cytosine, and thymine. Base pairing occurs where adenine pairs with thymine and guanine pairs with cytosine.

Answer:

DNA is a double - helix (twisted ladder) structure composed of nucleotides. Each nucleotide contains phosphate, deoxyribose, and a nitrogenous base (adenine, guanine, cytosine, thymine). Base pairing (adenine - thymine, guanine - cytosine) holds the two strands of the double helix together.