DNA REPLICATION

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DNA REPLICATION
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DO NOW

• What does it mean to replicate?

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ANSWER

• To replicate means to make a copy of something so
  in DNA replication, it is essentially making a
  copy of itself

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How Does DNA Replicate?

• DNA is ________ strands
• Strands separate
• Two new sugar/phosphate backbones are laid out

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DNA Replication

• Complementary nucleotide binds to original strand
• Create two new identical strands
• Lets Draw It!

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RNA
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What is RNA?

• Nucleic Acid
• Consists of nucleotides
• a. 5 carbon sugar
• b. phosphate
• c. 4 types of nitrogenous bases

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How are DNA and RNA different?

• Two Ways
• 1. Different 5 carbon sugars
• 2. RNA has uracil instead of thymine

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What are the 4 types of Nitrogenous Bases for RNA?

• Uracil (U)
• Adenine (A)
• Guanine (G)
• Cytosine (C)
• Uracil pairs with Adenine Cytosine pairs with
  Guanine

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Types of RNA
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Three Types of RNA

• Messenger RNA (mRNA)
• Takes message from nucleus to the ribosome
• 2. Transfer RNA (tRNA)
• Transfers amino acids (proteins) to the ribosome

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RNA Types (cont)

• 3. Ribosomal RNA (rRNA)
• Makes up the structure of the ribosome

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TRANSCRIPTION
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Transcription

• Process that makes RNA from DNA

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5 Step Process

1. DNA strands unzip (separate) with the help of
   enzymes
2. RNA nucleotides bond to one side of the DNA

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Transcription Steps (cont)

• 3. Enzymes break the bonds between the RNA and
  DNA nitrogenous bases
• 4. RNA leaves the nucleus

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Transcription Steps (cont)

• 5. DNA reattaches
• Lets Draw!