Interactive Video - DNA Transcription

What is the main difference between traditional vaccines and mRNA vaccines?

• Traditional vaccines are made from plants, while mRNA vaccines are made from animals.

• Traditional vaccines are only for children, while mRNA vaccines are for adults.

• Traditional vaccines contain a weakened virus, while mRNA vaccines contain instructions for cells.

• Traditional vaccines are taken orally, while mRNA vaccines are injected.

What is the role of RNA polymerase during transcription?

• It transports proteins to the nucleus.

• It repairs damaged DNA.

• It breaks down mRNA molecules.

• It unwinds DNA and forms a chain of nucleic acid bases.

What happens during the elongation step of transcription?

• RNA polymerase detaches from the DNA.

• RNA polymerase attaches to the DNA at the promoter region.

• RNA polymerase repairs the DNA strand.

• RNA polymerase unwinds DNA and travels down one strand.

Why is splicing necessary in the processing of pre-mRNA?

• To remove non-coding regions and create a functional mRNA.

• To duplicate the DNA strand.

• To add a cap and tail to the mRNA.

• To break down the mRNA molecule.

What is the central dogma of molecular biology?

• Proteins make DNA, and DNA makes RNA.

• Proteins make RNA, and RNA makes DNA.

• RNA makes DNA, and DNA makes proteins.

• DNA makes RNA, and RNA makes proteins.