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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


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    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