Transcription

which process is used to make mRNA from the DNA i the nucleus?

• Transcription

• Translation

• Replication

• Both A & C

How does RNA differ from DNA?

• RNA contains Uracil and deoxyribose.

• RNA contains Uracil and ribose.

• RNA contains ribose and Thymine

• RNA contains Adenine and ribose.

Which enzyme dose transcription use ?

• Ligase enzyme

• DNA polymerase

• helicase enzyme.

• RNA polymerase.

what is the role of RNA polymerase ?

• To synthesize DNA

• To synthesize RNA

• To synthesize amino acids.

• To synthesize proteins.

What is the result of transcription?

• The synthesis of RNA from protein.

• The synthesis of protein from DNA.

• The synthesis of protein from RNA.

• The synthesis of RNA from DNA

The transcription of RNA from DNA takes place in several steps. In which step of transcription does RNA polymerase actively build the mRNA strand by attaching RNA bases to one another one by one by using the DNA as a template?

• Initiation

• Elongation

• Termination

• Translation

What is the nucleotide sequence of the complementary strand of this DNA molecules?

AAT-GCG-ACC

• AAT-GCG-ACC

• CCA-GCG-TAA

• TTA-CGC-TGG

• UUA-CGC-AGG

What is the nucleotide sequence of mRNA transcribed from this DNA molecules?

AAT-GCG-ACC

• TTA-CGC-TGG

• UUA-CGC-UGG

• AAT-GCG-ACC

• UUT-CGC-UGG

What is the first step in the transcription of DNA into mRNA?

• RNA Polymerase binds to the promoter region on the template DNA strand.

• RNA Polymerase adds nucleotides to the mRNA to create matching base pairs.

• RNA Polymerase breaks the DNA strand so that it exists as a short segment corresponding to the length of an mRNA.

• RNA Polymerase breaks in half and each half binds to a different strand of DNA

In mRNA, which DNA base is replaced with uracil (U)?

• T

• A

• G

• C