Question 15

Transcription uses an RNA strand to produce a complementary strand of DNA.

Transcription is the process during protein synthesis where the information encoded in a strand of RNA is used to create a complementary DNA strand. This process is critical for gene expression and regulation.

A) Transcription

Transcription is the correct answer because it specifically refers to the synthesis of RNA from a DNA template, which involves creating a complementary strand of RNA that can later be used to synthesize proteins. This process is fundamental to the flow of genetic information in cells.

B) Translation

Translation is not correct because it refers to the process by which ribosomes synthesize proteins using the information encoded in messenger RNA (mRNA), rather than producing a complementary strand of DNA. Translation occurs after transcription and is focused on protein synthesis.

C) Transfer synthesis

Transfer synthesis is an incorrect option as it does not specifically refer to any established process in molecular biology related to DNA or RNA synthesis. This term is not commonly recognized in the context of genetic information flow.

D) Codon synthesis

Codon synthesis is incorrect because it does not describe a specific process in protein synthesis. Codons are sequences of three nucleotides in mRNA that correspond to specific amino acids, but the term does not refer to the process of creating a complementary DNA strand.

Conclusion

Transcription is definitively the correct answer as it accurately describes the process of creating RNA from a DNA template, leading to the formation of a complementary strand. All other options fail to represent processes that involve the synthesis of DNA from RNA or are not recognized terms in molecular biology.