What is RNA anyways How is it different
- Slides: 13
What is RNA, anyways? How is it different than DNA?
What is RNA & how is it different from DNA? • DNA • RNA – – – – Nucleic acid Double stranded Deoxyribose sugar Thymine Nucleic acid Single stranded Ribose sugar Uracil (instead of Thymine)
Differences between DNA and RNA Double strand RNA Single strand Deoxyribose sugar Ribose sugar Contains thymine Contains uracil Very large molecule Small molecule
Different Sugars DNA RNA Can you spot the difference?
Different Bases Can you spot the difference?
DNA- double stranded RNA- single stranded
RNA and DNA Nucleotides RNA DNA
RNA IS COPIED FROM DNA (double stranded original, protected in nucleus) COPIED RNA (single strand - mobile)
m. RNA: the messenger RNA is how the body gets information from the nucleus (DNA) to the place where protein gets made (ribosomes)
Transcription DNA zips back together DNA unzips DNA ACTTTACGGCAT TGAAATGCCGTA ACTTTACGGCAT RNA copy made ACTTTACGGCAT TGAAATGCCGTA ACUUUACGGCAU TGAAATGCCGTA RNA ACUUUACGGCAU
If the DNA code is this: TACGAGTTACATAAA ATGCTCAATGTATTT What is the m. RNA code? Use the bottom strand as the template for m. RNA UACGAGUUACAUAAA
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 m. RNA molecule to be formed.
Animation of Transcription • http: //wwwclass. unl. edu/biochem/gp 2/m_biology/ani mation/gene_a 2. html
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