Question

the sides of a dna strand (the backbones) are made out of *
2 points
sugars and phosphates
proteins
fats
plastic

in dna, adenine pairs with *
2 points
guanine
thymine
cytosine
uracil

in rna, adenine pairs with *
2 points
a guanine
cytosine
thymine
uraci

Explanation:

For the first question, DNA's backbone is composed of sugar (deoxyribose) and phosphate groups. Proteins, fats, and plastic are not part of DNA's structure.
For the second question, in DNA, adenine pairs with thymine (A - T) through hydrogen bonds. Guanine pairs with cytosine (G - C). Uracil is not present in DNA.
For the third question, in RNA, adenine pairs with uracil (A - U). Thymine is not in RNA, and the pairings of guanine - cytosine (G - C) remain similar to DNA in terms of base - pairing rules for those two bases.

Answer:

sugars and phosphates, thymine, uraci