3.2 DNA Transcription

What is the main function of ribosomes?

• To store DNA

• To produce proteins

• To replicate RNA

• To break down lipids

What is the relationship between DNA and mRNA?

• mRNA is a copy of DNA

• mRNA destroys DNA

• mRNA is unrelated to DNA

• mRNA is identical to DNA

What happens to the transcript after it is synthesized?

• It is degraded immediately

• It is read by the ribosome

• It is converted back to DNA

• It is used to synthesize lipids

What process occurs after transcription to generate proteins?

• Replication

• Translation

• Elongation

• Termination

What is the role of RNA polymerase in gene transcription?

• It binds to the promoter region of DNA.

• It translates RNA into proteins.

• It unwinds the DNA helix.

• It synthesizes lipids.

What makes the bonds between A and T easier for RNA polymerase to access?

• Fewer hydrogen bonds

• More hydrogen bonds

• Stronger hydrogen bonds

• No hydrogen bonds

Which describes the role of the ~10 and ~35 elements and RNA polymerase?

• They are binding sites for RNA polymerase

• They degrade RNA polymerase

• They inhibit RNA polymerase

• They modify RNA polymerase

In which direction does RNA polymerase add nucleotides?

• 5’ to 3’

• 3’ to 5’

• 2’ to 4’

• 4’ to 2’

What is the role of the template strand in transcription?

• To serve as a guide for RNA synthesis

• To bind proteins

• To replicate itself

• To degrade RNA

What is the function of the poly-A tail in mRNA?

• To protect mRNA from degradation

• To replicate DNA

• To initiate transcription

• To bind to ribosomes