rna

• what is mrna?

  a copy of one gene in your dna
• TRNA

  A) amino acid binding site

  B) hydrogen bonds

  C) anticodon

  
• describe the process of transcription (1) 


  1. RNA polymerase breaks the DNA strands
  2. RNA nucleotide in the nucleus attached to the exposed bases and attached using RNA polymerase
  3. the Pre-mrna is spliced to remove the intron ( non-coding regions) to produce mrna which leaves the nucleus
• describe the process of translation (2)


  1. a ribosome binds to the mrna strand
  2. TRNA with a complimentary anticodon to the codon on mrna brings an amino acids
  3. the ribosome joins the amino acids with a peptide bond via a condensation reaction which requires ATP
  4. the ribosome then moves along the mrna strand
• what's the overall function of RNA?

  transfer genetic information from DNA to ribosomes
• describe the stucture of a ribosomal nucleotide?

  • phosphate group
  • ribose sugar
  • bases : adenine , uracil , guanine , cytosine
• what are the three types of RNA?

  • rRNA
  • mRNA
  • tRNA
• where is mRNA made?

  nucleus
• what are structures of mRNA?

  • single stranded
  • short
  • one gene
  • has codons
• what are codons?

  a triplet of base that codes for an amino acid
• what is the function of tRNA ?

  transfer amino acids to ribosomes using its anticodons
• where are tRNA found?

  cytoplasm
• describe the structure of tRNA ?

  • clover shape
  • held with hydrogen bonds
  • anticodon
  • amino acid binding site
• what is rRNA ?

  ribosomal RNA and proteins make ribosomes