DNA STRUCTURE (REVIEW)
Miss Sofía Paz
A double-
stranded
nucleic acid
that contains
the genetic
information for
cell growth,
division, and
function
2 DNA
Deoxyr...
Nucleotide
NUCELOTIDE
BASE
PHOSPHATE
)
Nucleotide
RNA
Cyclic nitrogen
containing molecule
with properties of a
base.
Organic compounds
DNA bases: A G C T
RNA bases: A G C U
DNA
 Nucleic acid (polymer, polynucleotide)
9
Complementary Base Pairing And Hydrogen Bonds (DNA Double Helix )
 Base pairing: each type of nucleobase on one strand bo...
Base pairing
DNA DOUBLE HELIX
13
NucleosomeS
Is a segment of DNA
wound in a sequence
around eight histone
protein cores (octomer)
Nucleosomes form the fund...
Dna structure review
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Dna structure review

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Dna structure review

  1. 1. DNA STRUCTURE (REVIEW) Miss Sofía Paz
  2. 2. A double- stranded nucleic acid that contains the genetic information for cell growth, division, and function 2 DNA Deoxyribonucleic Acid Polynucleotide: built of nucleotides (sugar,base, phosphate) Nucleotide: organic molecule. Building block of nucleic acids
  3. 3. Nucleotide
  4. 4. NUCELOTIDE BASE PHOSPHATE )
  5. 5. Nucleotide
  6. 6. RNA Cyclic nitrogen containing molecule with properties of a base. Organic compounds DNA bases: A G C T RNA bases: A G C U
  7. 7. DNA  Nucleic acid (polymer, polynucleotide)
  8. 8. 9
  9. 9. Complementary Base Pairing And Hydrogen Bonds (DNA Double Helix )  Base pairing: each type of nucleobase on one strand bonds with just one type of nucleobase on the other strand  Hyrogen Bonds: purines form hydrogen bonds to pyrimidines. Adenine bonding only to Thymine in two hydrogen bonds Cytosine bonding only to Guanine in three hydrogen bonds Two nucleotides bonding together across the double helix is called a base pair.
  10. 10. Base pairing
  11. 11. DNA DOUBLE HELIX
  12. 12. 13
  13. 13. NucleosomeS Is a segment of DNA wound in a sequence around eight histone protein cores (octomer) Nucleosomes form the fundamental units of eukaryotic chromatin, which is used to pack the large eukaryotic genomes into the nucleus while still ensuring A nucleosome is the basic unit of DNA packaging in eukaryotes

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