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Nucleic Acids. 2 Types DNA- deoxyribonucleic acid RNA- ribonucleic acid What do they do? Contain genetic information . DNA. Exists as double helix- like a spiral staircase Encodes cells protein sequences Exists in our cells in compact segments called chromosomes. RNA.

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nucleic acids
Nucleic Acids
  • 2 Types
    • DNA- deoxyribonucleic acid
    • RNA- ribonucleic acid
  • What do they do?
    • Contain genetic information
slide2
DNA
  • Exists as double helix- like a spiral staircase
  • Encodes cells protein sequences
  • Exists in our cells in compact segments called chromosomes
slide3
RNA
  • Three different types of RNA for different purposes(will discuss in later unit)
  • Makes working copies of genes
  • Genes dictate what amino acids are needed to make a certain protein
what are nucleic acids made of
What are nucleic acids made of?
  • Subunits (monomers)are called nucleotides
  • nucleotides are made of 3 parts
    • 1. Phosphate group (PO4)
    • 2. Sugar
    • 3. Nitrogen Containing Base
bases
Bases
  • 2 groups
    • Purines- larger bases
      • Adenine
      • Guanine
    • Pyrimidines- smaller bases
      • Thymine
      • Cytosine
bases8
Bases
  • Adenine always pairs up with Thymine and vice versa
  • Guanine and Cytosine always pair together