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DNA

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DNA - PowerPoint PPT Presentation


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DNA. Nucleic Acids. Function/job: Store important Information in the cell Made of: nucleotides Examples: DNA and RNA. Nucleic Acid Structure. A nucleotide is made of 3 components: Phosphate sugar nitrogen base. DNA.

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Presentation Transcript
nucleic acids
Nucleic Acids
  • Function/job: Store important Information in the cell
  • Made of: nucleotides
  • Examples: DNA and RNA
nucleic acid structure
Nucleic Acid Structure
  • A nucleotide is made of 3 components:
    • Phosphate
    • sugar
    • nitrogen base
slide5
DNA
  • Contains information needed for cell activity and cell division
  • Contains all genetic information
  • DNA – Deoxyribonucleic Acid
slide6
DNA
  • Structure, It contains
    • Sugar Phosphate Backbone (deoxyribose)
    • Nitrogen containing bases (four possible)
    • Double Stranded
slide7
DNA
  • Double Helix, with base pairing in the center.
slide8
DNA
  • Four Possible Nitrogen Ring bases
    • ADENINE – A
    • GUANINE– G
    • CYTOSINE – C
    • THYMINE – T

Know that:

A goes with T

G goes with C

dna base pairing
The bases are in the inside of the ladder structure they are like the rungs of the ladder.

The order of base pairs gives organisms their unique traits

DNA Base Pairing
slide10
A bonds with T

C bonds with G

It is estimated that there are over 3 billion base pairs in humans

DNA
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Complimentary Strand of DNA

DNA Strand #1

Double Helix Strand of DNA. –WRITE THE CODE FOR THE COMPLIMENTARY STRAND

Dots = Hydrogen bonds