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DNA Replication and Review
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Mistakes in DNA are called...
Mistakes in DNA are called...
Mutations
Name one of the two molecules important in DNA replication.
Name one of the two molecules important in DNA replication.
Enzymes and free nucleotides.
Why is DNA considered semi-conservative?
Why is DNA considered semi-conservative?
Because one strand is always conserved.
What enzyme is responsible for the separation of the DNA strands?
What enzyme is responsible for the separation of the DNA strands?
Helicase
What enzyme is responsible for joining nucleotides?
What enzyme is responsible for joining nucleotides?
Polymerase
What are the short stretches of newly synthesized DNA on the lagging strand.
What are the short stretches of newly synthesized DNA on the lagging strand.
Okazaki Fragments
What is a short stretch of DNA nucleotides hydrogen bonded to its complimentary strands.
What is a short stretch of DNA nucleotides hydrogen bonded to its complimentary strands.
Primer
Both strands of the double helix replicates in the _______ direction of the other strand.
Both strands of the double helix replicates in the _______ direction of the other strand.
Opposite
How many types of polymerase are there?
How many types of polymerase are there?
Three
What is the fluid of the nucleus called?
What is the fluid of the nucleus called?
Nucleoplasm.
What are floating around in the nucleus that form pairs with their complimentary others?
What are floating around in the nucleus that form pairs with their complimentary others?
Free nucleotides
What is the first thing DNA needs to do in order to replicate?
What is the first thing DNA needs to do in order to replicate?
Unwind
The one strand oriented in the 5' to 3' direction is called....
The one strand oriented in the 5' to 3' direction is called....
The lagging strand
The one strand oriented in the 3' to 5' direction is called....
The one strand oriented in the 3' to 5' direction is called....
The leading strand
What kind of bond is there between two adjoining nucleotides?
What kind of bond is there between two adjoining nucleotides?
Covalent
What are the two types of DNA?
What are the two types of DNA?
DNA and RNA
Nucleotides consist of what three molecules?
Nucleotides consist of what three molecules?
Pentose sugar, phosphate, organic base.
Five different bases are...
Five different bases are...
Adenine, cytosine, thymine, guanine, and uracil
What bases can form two hydrogen bonds?
What bases can form two hydrogen bonds?
Adenine, thymine, and uracil
Name two purines.
Name two purines.
Adenine and guanine
Describe a pyrimidine.
Describe a pyrimidine.
1 ring structure
Describe a purine.
Describe a purine.
2 ring structure
Uracil binds with what?
Uracil binds with what?
Adenine in RNA.
What kind of reaction links together nucleotides?
What kind of reaction links together nucleotides?
Condensation
Name three pyrimidines.
Name three pyrimidines.
Cytosine, thymine, and uracil
In 1962, three men were awarded a Nobel Prize for their work on DNA. Can you name one of them?
In 1962, three men were awarded a Nobel Prize for their work on DNA. Can you name one of them?
James Watson, Francis Crick, and Maurice Wilkins
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What Would You Like To Risk?
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Go To The Final Question
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