1. What is RNA, anyways? How is it different than DNA?

2. What is RNA & how is it different from DNA? DNA –Nucleic acid –Double stranded –Deoxyribose sugar –Thymine RNA –Nucleic acid –Single stranded –Ribose sugar –Uracil (instead of Thymine)

3. Differences between DNA and RNA DNA Double strand Deoxyribose sugar Contains thymine Very large molecule RNA Single strand Ribose sugar Contains uracil Small molecule

4. Different Sugars DNA RNA Can you spot the difference?

5. Different Bases Can you spot the difference?

6. DNA- double stranded RNA- single stranded

7. RNA and DNA Nucleotides DNA RNA

8. RNA IS COPIED FROM DNA DNA (double stranded original, protected in nucleus) COPIED RNA (single strand - mobile)

9. mRNA: the messenger RNA is how the body gets information from the nucleus (DNA) to the place where protein gets made (ribosomes)

10. Transcription DNA unzips RNA copy made DNA zips back together ACTTTACGGCAT TGAAATGCCGTA ACTTTACGGCAT TGAAATGCCGTA ACUUUACGGCAU ACTTTACGGCAT TGAAATGCCGTA ACUUUACGGCAU RNA DNA

11. If the DNA code is this: TACGAGTTACATAAA ATGCTCAATGTATTT What is the mRNA code? Use the bottom strand as the template for mRNA UACGAGUUACAUAAA

12. Transcription of RNA from a template strand of DNA RNA polymerase attaches at the promoter sequence of DNA, and it moves along the DNA, unzipping the strands & “reading” the template – this allows for one mRNA molecule to be formed.

13. Animation of Transcription http://www.fed.cuhk.edu.hk/~johnson/teac hing/genetics/animations/transcription.htmhttp://www.fed.cuhk.edu.hk/~johnson/teac hing/genetics/animations/transcription.htm