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 staircase Encodes cells protein sequences Exists in our cells in compact segments called chromosomes. RNA.

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Nucleic acids l.jpg
Nucleic Acids

  • 2 Types

    • DNA- deoxyribonucleic acid

    • RNA- ribonucleic acid

  • What do they do?

    • Contain genetic information


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DNA

  • Exists as double helix- like a spiral staircase

  • Encodes cells protein sequences

  • Exists in our cells in compact segments called chromosomes


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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


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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



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Bases

  • 2 groups

    • Purines- larger bases

      • Adenine

      • Guanine

    • Pyrimidines- smaller bases

      • Thymine

      • Cytosine



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Bases

  • Adenine always pairs up with Thymine and vice versa

  • Guanine and Cytosine always pair together


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