Structure of DNA

• How many nucleotides are DNA composed of?

  Four Nucleotides
• What three parts do each nucleotide have?

  Deoxyribose (Sugar), Phosphate Group, Nitrogen-Containing Base
• What is the only difference in the four nucleotides?

  The Nitrogen Containing Bases
• What is the Structure of DNA?

  Double Helix, that is made up of a sugar-phosphate backbone on the outside with bases on the inside
• What are the pairings in DNA?

  Adenine-Thymine, Guanine-Cytosine A+T, G+C, C+G
• What are the nucleotides in DNA?

  Adenine, Thymine, Guanine, Cytosine
• Do nucleotides always pair the same way in DNA?

  Yes
• The backbone is connected by?

  Covalent Bonds
• The bases are connected by?

  Hydrogen Bonds