Question

1. in a dna molecule which base will pair with cytosine? mark only one oval. thymine adenine guanine 27. which nucleic acid is used to help create proteins? mark only one oval dna rna amino acids

Explanation:

1. In DNA, base - pairing rules state that cytosine (C) pairs with guanine (G) through three hydrogen bonds. Adenine (A) pairs with thymine (T) in DNA.
2. RNA (specifically messenger RNA - mRNA, transfer RNA - tRNA, and ribosomal RNA - rRNA) is involved in protein synthesis. DNA stores the genetic information, but RNA is directly used in the processes of transcription (DNA to RNA) and translation (RNA to protein). Amino acids are the building blocks of proteins, not a nucleic acid.

Answer:

1. Guanine
2. RNA