Journal: Describe how DNA is replicated. Q. What is the shape of DNA? A. Double Helix.
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Transcript of Journal: Describe how DNA is replicated. Q. What is the shape of DNA? A. Double Helix.
![Page 1: Journal: Describe how DNA is replicated. Q. What is the shape of DNA? A. Double Helix.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649f525503460f94c75c78/html5/thumbnails/1.jpg)
Journal: Describe how DNA is replicated
![Page 2: Journal: Describe how DNA is replicated. Q. What is the shape of DNA? A. Double Helix.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649f525503460f94c75c78/html5/thumbnails/2.jpg)
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