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Unit 2 Human BIo set
Human Biology
| Question | Answer |
|---|---|
| 1. Step one of transcription | |
| RNA polymerase (complex) binds to the promoter region | |
| Recognition sites | |
| Transcribed region | |
| in | |
| Copy link | |
| 3' | |
| DNA | |
| Promoter | |
| The RNA polymerase complex contains the enzyme (RNA polymerase) and some other parts known as transcription factors. These include a factor that works like helicase... | |
| This transcription factor breaks the hydrogen bonds between the bases of a short segment of the DNA. | |
| 3 | |
| Copy link | |
| DNA | |
| Single-stranded template | |
| 3. Elongation | |
| The RNA polymerase recruits RNA nucleotides that are complementary to the template strand. Joining them on (and together) in a 5' to 3' direction | |
| The enzme complex moves along the strand, opening up only the section required. As the DNA strands rejoin behind the enzyme, the RNA molecule separates from the template strand. | |
| coding strand 5' | |
| ATGATCTCGTAA | |
| RNA 5' | |
| A | |
| Template strand 3i TACTAGAGCATT | |
| - 5' | |
| 4. Termination | |
| Something about the DNA code tells the enzyme to stop producing the RNA. There are many ways the code can do this and you don't need to know them! | |
| The enzyme and the RNA strand disconnect from the DNA strand. The RNA strand is known as pre-mRNA |
Created by:
Im_Not_Stingy