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DNA

DNA. Deoxyribonucleic Acid. Functions of DNA. It stores and used information to direct cell activities. Controls the production of proteins. It copies itself exactly for new cells. DNA Structure. Double Helix- two long strands of nucleotides. Nucleotides have 3 parts.

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DNA

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  1. DNA Deoxyribonucleic Acid

  2. Functions of DNA • It stores and used information to direct cell activities. • Controls the production of proteins. • It copies itself exactly for new cells.

  3. DNA Structure • Double Helix- two long strands of nucleotides.

  4. Nucleotides have 3 parts • Sugar (Deoxyribose) • Phosphate group • A nitrogen base

  5. Nitrogen Base can be 1 of 4 • Adenine • Guanine • Thymine • Cytosine

  6. Base Pairs • Adenine pairs w/ Thymine (A-T) • Guanine pairs w/ Cytosine (G-C)

  7. DNA Replication • DNA makes a copy of itself. • Replication Process • Double helix unwinds • Base pairs are broken apart • Each single strand of parent DNA acts like a template. • The new strand is made from free floating nucleotides. • An enzyme called DNA Polymerase matches that bases. • DNA molecules have formed.

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