Transcription (from DNA to RNA)

The DNA molecule is too precious to be allowed to leave the nucleus because it can be attacked by nucleases or enzymes that break down nucleic acids DNA or RNA. Instead, the DNA makes a copy of the gene it wants to express. This copy is called mRNA. It is the mRNA that leaves the nucleus and carries the message to the protein factory of the cell called "ribosome". To see an animation of this process, click this link: TRANSCRIPTION

QUIZ

1. List three ways that DNA is different from RNA.
2. Where do you find DNA inside the cell?
3. Where do you find RNA inside the cell?
4. Why is it necessary for the DNA to make an RNA copy?
5. How does the ribosome work together with the nucleus in promoting homeostasis?
6. How does the cell membrane work together with the ribosome in promoting homeostasis of the cell?
7. How do the bases pair during transcription?