DNA

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DNA Structure and Replication
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DNA Deoxyribonucleic Acid
Purines Pyrimidines

• Building block is a nucleotide

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

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DNA Replication

• 1. DNA UNWINDS AND UNZIPS

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2. Free floating nucleotides pair up with
complementary strand

• A
• T
• T
• G
• G
• C
• A
• C
• A

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3. Complementary new nucleotides join up to form
new complementary strand
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RNA
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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)

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Synthesis of Protein

• DNA never leaves the nucleus
• Process
• 1. Transcription
• Whats the difference?

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