Question

5 select all that apply: which of the following characteristics do dna and rna have in common? a made up of repeating nucleotides. b contain the base a(denine). c can leave the nucleus d double stranded. e needed for protein synthesis f contain the base t(hymine).

Explanation:

• Option A: Both DNA and RNA are nucleic acids made of repeating nucleotide units (each nucleotide has a sugar, phosphate, and base).
• Option B: Both DNA and RNA contain adenine (A) as one of their nitrogenous bases.
• Option C: DNA is mostly confined to the nucleus (except in some cases like mitochondrial DNA), while RNA (e.g., mRNA, tRNA, rRNA) can leave the nucleus. So this is not a common characteristic.
• Option D: DNA is double - stranded, but RNA is usually single - stranded. So this is not a common characteristic.
• Option E: DNA holds the genetic code, and RNA (mRNA, tRNA, rRNA) is directly involved in the process of translating that code into proteins. So both are needed for protein synthesis.
• Option F: Thymine (T) is only found in DNA; RNA has uracil (U) instead. So this is not a common characteristic.

Answer:

A. Made up of repeating nucleotides.
B. Contain the base A(denine).
E. Needed for protein synthesis