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RNA Structure and Function

RNA Structure and Function. Another Nucleic Acid?? Meet RNA. Monomer: Polymer: What are some differences between DNA and RNA?. DNA Sugar= Deoxyribose Double stranded Contains the base thymine Found only in the nucleus. RNA Sugar= Ribose

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RNA Structure and Function

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  1. RNA Structure and Function

  2. Another Nucleic Acid?? Meet RNA • Monomer: Polymer: • What are some differences between DNA and RNA?

  3. DNA Sugar= Deoxyribose Double stranded Contains the base thymine Found only in the nucleus RNA Sugar= Ribose Single Stranded Contains the base uracil Found in the nucleus and the cytoplasm Differences between DNA and RNA

  4. DNA Function • DNA holds your genetic information • Each gene codes for the production of a specific protein • The genetic code is in the sequence of nucleotides

  5. RNA Function • DNA can never leave the nucleus • RNA can make a copy of the DNA gene and carry it out to the ribosome • The process of copying DNA into RNA is called transcription

  6. TRANSCRIPTION

  7. Transcription • Transcription takes place in the nucleus • The goal of transcription is to make an RNA copy of a gene

  8. Transcription • Step One: The DNA molecule “unzips” • Step Two: Following the rules of base pairing, a single stranded RNA molecule is made • Remember in RNA U replaces T so… • Base Pairing • A  U • T  A • C  G • G  C

  9. Transcription

  10. Transcription • Transcribe the following DNA sequence into RNA: • DNA: T A C C G G T A A • RNA: A U G G C C A U U • The type of RNA made during transcription is called messenger RNA (mRNA) • Step Three:mRNA leaves the nucleus and carries a copy of the gene to the ribosome

  11. What happens next…

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