RNA and Transcription

How do mRNA vaccines stimulate the immune system compared to traditional vaccines?

• mRNA vaccines introduce a weakened virus, while traditional vaccines provide instructions for viral proteins.

• mRNA vaccines provide instructions for cells to produce viral proteins, while traditional vaccines introduce a weakened or inactive virus.

• mRNA vaccines directly attack the virus, while traditional vaccines train the immune system.

• mRNA vaccines suppress the immune system, while traditional vaccines activate it.

In eukaryotic cells, where is DNA typically stored, and what is the role of mRNA in relation to protein synthesis?

• DNA is stored in the cytoplasm, and mRNA carries instructions to the nucleus.

• DNA is stored in the nucleus, and mRNA carries instructions from the nucleus to protein-building structures outside.

• DNA is stored in the mitochondria, and mRNA helps repair damaged DNA.

• DNA is stored in ribosomes, and mRNA directly builds proteins.

What is a key structural difference between DNA and mRNA?

• DNA is a single-stranded molecule, while mRNA is a double helix.

• DNA contains the base Uracil, while mRNA contains Thymine.

• DNA is a double-stranded helix, while mRNA is typically a single-stranded molecule.

• DNA is always shorter than mRNA.

What are the three sequential steps of transcription?

• Elongation, Initiation, Termination

• Initiation, Elongation, Termination

• Termination, Elongation, Initiation

• Initiation, Termination, Elongation

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What is the primary purpose of splicing during mRNA processing?

• To add new genetic material to the mRNA.

• To remove non-coding regions from the mRNA.

• To duplicate the mRNA molecule for faster protein synthesis.

• To repair damaged sections of the mRNA.

Which sequence correctly represents the flow of genetic information as described by the Central Dogma?

• Protein -> RNA -> DNA

• RNA -> DNA -> Protein

• DNA -> RNA -> Protein

• DNA -> Protein -> RNA

What was Francis Crick's specific hypothesis regarding the flow of information from proteins?

• Information in proteins can be used to create DNA.

• Information in proteins can be used to create RNA.

• Information in proteins cannot be used to make DNA, RNA, or more proteins.

• Proteins are the only molecules that can store genetic information.

How does alternative splicing contribute to protein diversity?

• It allows a single DNA sequence to code for multiple different proteins.

• It ensures that only one type of protein is produced from each gene.

• It repairs mutations in the mRNA sequence before protein synthesis.

• It increases the overall quantity of protein produced from a gene.