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Nucleic Acids

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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 ... – PowerPoint PPT presentation

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Title: Nucleic Acids


1
Nucleic Acids
  • 2 Types
  • DNA- deoxyribonucleic acid
  • RNA- ribonucleic acid
  • What do they do?
  • Contain genetic information

2
DNA
  • Exists as double helix- like a spiral staircase
  • Encodes cells protein sequences
  • Exists in our cells in compact segments called
    chromosomes

3
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

4
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

5
Nucleic Acid (DNA)
6
Bases
  • 2 groups
  • Purines- larger bases
  • Adenine
  • Guanine
  • Pyrimidines- smaller bases
  • Thymine
  • Cytosine

7
The Bases
8
Bases
  • Adenine always pairs up with Thymine and vice
    versa
  • Guanine and Cytosine always pair together
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