Question

which of the following is a characteristic of rna?
multiple choice
rna contains thymine, which pairs with adenine.
rna contains deoxyribose.
rna is double - stranded.
rna molecules are necessary for translation and gene regulation.

Explanation:

• RNA contains uracil instead of thymine. DNA has thymine that pairs with adenine. So the first option is wrong.
• RNA contains ribose. DNA contains deoxyribose. So the second option is wrong.
• RNA is usually single - stranded. DNA is double - stranded. So the third option is wrong.
• RNA molecules like mRNA (messenger RNA) is involved in translation (carrying genetic information from DNA to ribosomes for protein synthesis), tRNA (transfer RNA) helps in transporting amino acids during translation, and there are non - coding RNAs involved in gene regulation.

Answer:

RNA molecules are necessary for translation and gene regulation.