Question

which best summarizes the process of protein synthesis?
○ rna instructs dna to make proteins.
○ dna unzips, resulting in the formation of two protein molecules.
○ rna moves the dna code to the ribosomes for protein synthesis.
○ dna makes proteins in the nucleus.

Explanation:

To determine the correct option, we analyze each choice based on protein synthesis knowledge:

• Option 1: DNA does not directly make proteins; transcription and translation are involved, and DNA is in the nucleus but protein synthesis involves RNA. Incorrect.
• Option 2: DNA unzipping is part of replication (making DNA copies), not protein synthesis. Incorrect.
• Option 3: In protein synthesis, DNA's code is transcribed into mRNA (RNA), which then moves to ribosomes (in cytoplasm) with the code for translation (protein synthesis). This matches the process. Correct.
• Option 4: RNA (specifically mRNA) carries the DNA code to ribosomes, not the other way around. Incorrect.

Answer:

The correct option is the third one (the option stating "RNA moves the DNA code to the ribosomes for protein synthesis").