Journal: Describe how DNA is replicated

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Journal Describe how DNA is replicated
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Q. What is the shape of DNA?

• A. Double Helix

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Q. What is the backbone of DNA

• A. Sugar and phosphates

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Q. What is the product of DNA replication?

• A. Two Identical daughter strands

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Q. What does DNA polymerase do?

• A. Adds the nitrogen bases proof reads the DNA
  sequences

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Q. Why must DNA replicate?

• A. growth and cell division

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Q. What is the name of the bond that holds one
base to another base, forming the rungs of the
DNA ladder?

• hydrogen bond

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What is a vaccine?

• a harmless version of a disease-causing microbe

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What does a vaccine do?

• Causes an immune response
• The body will make antibodies to fight the microbe

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Q What is a bacteriophage?

• Virus that infects bacteria

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Q When does DNA replication occur?

• During the Synthesis (S) phase of Interphase

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What is a replication fork?

• Half of a replication bubble, where the DNA
  seperates.

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What is DNA made of?

• Nucleotides

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What are the three parts of a nucleotide?

• Phosphate group, Sugar (deoxyribose), nitrogen
  base

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What does DNA stand for?

• Deoxyribonucleic acid

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What is DNA named after?

• Deoxyribose (sugar)

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There are two different groups of nitrogen bases
what are they?

• Purines and Pyrimidines

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How many rings do purines have?

• Two

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How many rings do pyrimidines have?

• 1 ring

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Which nitrogen bases are purines?

• Adenine and guanine

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Which are pyrimidines?

• Thymine and Cytosine

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Amount of A amount of ___

• T

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If the parent strand reads AGCTCCGATT what will
the complimentary strand read?

• TCGAGGCTAA

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What is the enzyme that unwinds/unzips the DNA?

• Helicase

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What enzyme adds the nitrogen bases?

• DNA polymerase

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Where does the energy for DNA replication come
from?

• When a nucleotide joins the strand, phosphate
  groups are broken off

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What are the steps of DNA replication?

• DNA unwinds, hydrogen bonds break, replication
  bubbles form, bubble grow together, two identical
  strands formed.

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What are the base pairing rules?

• A-T, G-C

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What is a mutation?

• Change in nucleotide sequence

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What enzyme proofreads the DNA and can fix
mistakes?

• DNA polymerase