DNA - PowerPoint PPT Presentation

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DNA

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DNA Structure and Replication DNA: Deoxyribonucleic Acid Building block is a nucleotide Purines Pyrimidines Types of Nucleic Acids Sides: sugar-phosphate backbone ... – PowerPoint PPT presentation

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Title: DNA


1
DNA Structure and Replication
2
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3
DNA Deoxyribonucleic Acid
Purines Pyrimidines
  • Building block is a nucleotide

4
Types of Nucleic Acids
5
  • Sides sugar-phosphate backbone
  • Rungs nitrogen bases
  • A T
  • G C
  • Strands antiparallel

6
DNA Replication
  • 1. DNA UNWINDS AND UNZIPS

7
2. Free floating nucleotides pair up with
complementary strand
  • A
  • T
  • T
  • G
  • G
  • C
  • A
  • C
  • A

8
3. Complementary new nucleotides join up to form
new complementary strand
9
RNA
10
DNA the code for life
  • DNA contains the code to make protein.
  • DNA is in the nucleus while protein synthesis
    occurs in ribosomes.
  • DNA copies to form RNA (transcription) which then
    goes to the ribosome and tells the ribosome which
    amino acids to put together to make protein
    (translation)

11
Synthesis of Protein
  • DNA never leaves the nucleus
  • Process
  • 1. Transcription
  • Whats the difference?

12
Synthesis of Protein contd
2. Translation End result protein
13
Big Picture
Replication
DNA
DNA
Protein Synthesis
mRNA
protein
14
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15
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Primary protein structure
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