Question

2.1.2 quiz: protein synthesis
question 5 of 10
which sentence describes how a proteins structure relates to dnas structure?
a. a proteins structure is based on its amino acid sequence, which is based on the nucleotide sequence of the dna that codes for the protein.
b. a proteins structure is based on its anticodons, which is based on the number of codons in the dna that codes for the protein.
c. a proteins structure is based on its nucleotide sequence, which is based on the amino acid sequence of the dna that codes for the protein.
d. a proteins structure is based on its number of polypeptides, which is based on the number of strands in the dna that codes for the protein.

Explanation:

DNA has a nucleotide sequence. Through transcription and translation, this sequence determines the amino acid sequence of a protein. The amino acid sequence then dictates the protein's structure. Anticodons (in tRNA) pair with codons (from mRNA, which is transcribed from DNA), not directly related as in option B. Proteins are made of amino acids, not nucleotides (option C is wrong). The number of polypeptides (quaternary structure aspect) and DNA strands (option D) are not the direct structural link as described in the correct option.

Answer:

A. A protein's structure is based on its amino acid sequence, which is based on the nucleotide sequence of the DNA that codes for the protein.