Question

question 3 of 10
how is protein synthesis different in prokaryotes and eukaryotes?
a. in prokaryotes, dna is in a long strand.
b. in prokaryotes, proteins are not formed.
c. in prokaryotes, transcription does not need to happen.
d. in prokaryotes, transcription and translation happen at the same time.

Explanation:

• Option A: DNA structure (long strand) is not directly related to the difference in protein synthesis mechanism. Both prokaryotes (usually circular DNA) and eukaryotes (linear DNA in chromosomes) have DNA as genetic material.
• Option B: Prokaryotes do form proteins. Protein synthesis is a fundamental life - sustaining process in all living cells (including prokaryotes like bacteria).
• Option C: Transcription (DNA to mRNA) is a necessary step in protein synthesis for both prokaryotes and eukaryotes.
• Option D: In prokaryotes, since there is no nucleus, transcription (in the cytoplasm) and translation (on ribosomes in the cytoplasm) can occur simultaneously. In eukaryotes, transcription occurs in the nucleus (pre - mRNA is processed) and then mRNA moves to the cytoplasm for translation. This is a key difference in their protein synthesis processes.

Answer:

D. In prokaryotes, transcription and translation happen at the same time.