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14 Cards in this Set
- Front
- Back
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DNA replication is (conservative/semi-conservative)
What does this mean? |
...semi-conservative.
Each new duplex molecule contains one strand from the parent molecule and one newly synthesized strand. |
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Replication takes place at a structure called the _____ _____.
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...replication fork.
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If a replication bubble contains 1 replication fork it's referred to as _____.
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...unidirectional.
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If a replication bubble contains 2 replication fork it's referred to as _____.
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...bidirectional.
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DNA replication is (unidirectional/bidirectional).
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...bidirectional.
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DNA is synthesized in the _____ ---> _____ direction.
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5' to 3'
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DNAp only has 1 function, and that is to...
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...add nucleotides to a growing polypeptide chain.
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DNA-directed DNA polymerase:
List 3 characteristics of the way DNAp adds nucleotides to a ppt chain. |
1) Adds nucleotides to the 3'-OH of an existing chain.
2) Synthesizes DNA in the 5' ---> 3' direction. 3) Has 3' ---> 5' exonuclase activity (i.e. proofreading) |
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The term that describes how DNA is transcribed by two different methods (one for each chain) is...
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...semi-discontinuous replication
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DNA transcription:
The strand that is transcribed continuously is referred to as the... |
...leading strand.
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DNA transcription:
The strand that is transcribed in discrete fragments is referred to as the... |
...lagging strand.
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DNAp III adds nucleotides to...
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...the 3'-OH of the primer.
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Be able to draw strand of DNA being synthesized, making sure each of the following elements are in the drawing:
A) Helicase (unzips) B) DNAp III (elongates) C) Primase (synthesizes primer) D) DNAp I (removes primer; fills gap) E) Ligase (seals strand) F) Okazaki fragments G) Topoisomerase |
...okay.
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At the macro level (histones), DNA replication begins at a place called the...
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...replication origin.
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