Transcription Quiz Answers

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What is the purpose of the 5' cap?

• To tell the ribosome to begin translation.
• To protect the mRNA from being digested and to tell the ribosome to begin translation.
• To protect the mRNA from being digested.
• None of the above.

What is the coding strand? What is the template strand?

• The coding strand is used to code for the production of the mRNA and the template strand is unused.
• The coding strand codes for the mRNA while the template strand is the unused strand.
• The coding strand codes for the mRNA while the template strand helps determine the quality and nature of the mRNA.
• The coding strand is the strand that is not transcribed into mRNA while the template strand is transcribed into mRNA.

What are the three stages of transcription?

• Initiation, Production, Final Modifications
• Initiation, Termination, Final Modifications
• Elongation, Termination, Final Modifications
• Initiation, Elongation, Termination

What are some differences and similarities between DNA and RNA?

• DNA and RNA are both double stranded molecules but with different nitrogenous bases.
• DNA and RNA both have the same nitrogenous bases but DNA is double stranded while RNA is single stranded.
• DNA and RNA share three of the same bases, DNA is double stranded while RNA is single stranded, and they each are made up of a different sugar.
• DNA and RNA are both completely identical in structure, the difference lies in the function.

What is removed, the introns or the exons?

• Introns, the non coding regions are removed.
• Exons, the non coding regions are removed.
• They are both removed from the mRNA.
• Both are crucial to the mRNA and the protein that it codes for, therefore they are not removed.

What bases does the promoter contain?

• Thymine and uracil bases.
• Adenine and uracil bases.
• Guanine and cytosine bases.
• Adenine and thymine bases.

What is the purpose of the poly-A-tail?

• To tell the ribosome to initiate translation.
• To protect the mRNA from degeneration.
• To protect the mRNA and to act as a prompt to start translation.
• To help the mRNA to navigate the cytoplasm.

In what direction does this process occur in?

• It varies, depending on the location of the promoter.
• 5' to 3' direction.
• 3' to 5' direction.
• It does not matter, it can occur in either direction.

What is the central dogma of molecular biology?

• RNA codes for proteins.
• Proteins codes for the production of DNA which in turn, produces more proteins.
• DNA codes for the production of proteins.
• DNA codes for proteins, but RNA carries the instructions to a protein building complex, the ribosome.

Why is no proofreading done?

• Due to the large scale production of mRNA and the redundancy found in the code.
• Proofreading is done by DNA polymerase I.
• Due to the redundancy found in the genetic code.
• Due to the large scale production of mRNA.

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