Question

what occurs during the elongation phase of transcription? a. dna is replicated b. trna transports amino acids to the ribosome c. rna polymerase synthesizes a complementary mrna strand d. ribosomes assemble amino acids into proteins
where does transcription occur in eukaryotic cells? a. in the nucleus b. in the cytoplasm c. in the mitochondria d. in the ribosome
what is the function of rna polymerase during transcription? a. synthesizes dna from an mrna template b. synthesizes mrna from a dna template c. forms peptide bonds during translation d. translates mrna into proteins
what is the role of dna during transcription? a. forms peptide bonds b. synthesizes mrna c. transports dna

Explanation:

1. During the elongation phase of transcription, RNA polymerase synthesizes a complementary mRNA strand. DNA replication (a) occurs in a different process. Adding amino - acids to the ribosome (b) is part of translation, and ribosomes assembling amino - acids into proteins (d) is also translation.
2. Transcription in eukaryotic cells occurs in the nucleus. The cytoplasm (b) is where translation mainly occurs, mitochondria (c) are involved in energy production, and ribosomes (d) are the sites of protein synthesis (translation).
3. The function of RNA polymerase during transcription is to synthesize mRNA from a DNA template. Synthesizing DNA from an RNA template (a) is reverse - transcription, forming peptide bonds (c) is part of translation, and translating mRNA into proteins (d) is also translation.
4. The role of DNA during transcription is to serve as a template for synthesizing mRNA. Forming peptide bonds (a) is part of translation, and there is no such thing as "translating DNA" (c) in the context of transcription.

Answer:

1. c. RNA polymerase synthesizes a complementary mRNA strand
2. a. In the nucleus
3. b. Synthesizes mRNA from a DNA template
4. b. Synthesizes mRNA