Question

question 4
4 points
select the most correct statement regarding nucleic acids.

• tdna is considered a \molecular slave\ of dna during protein synthesis.
• dna is a long, double - stranded molecule made up of a, t, g, and c bases.
• three forms exist: dna, rna, and tdna.
• rna is a long, single - stranded molecule made up of the bases a, t, g, and c.

clear selection

Explanation:

• Analyze each option:
• Option 1: tDNA is not a standard term; RNA (specifically mRNA, tRNA, rRNA) is involved in protein synthesis, so this is incorrect.
• Option 2: DNA is double - stranded, with bases adenine (A), thymine (T), guanine (G), and cytosine (C). This matches the known structure of DNA.
• Option 3: The main nucleic acids are DNA and RNA; tDNA is not a recognized main form, so this is incorrect.
• Option 4: RNA has uracil (U) instead of thymine (T), so this is incorrect.

Answer:

B. DNA is a long, double - stranded molecule made up of A, T, G, and C bases.