DNA Replication and Functions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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show | a. Semi-conservative
b. Replication is bidirectional and initiates at specific site
c. Chromosomes ends require special replication
d. Replication requires multiple enzymatic reactions
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What were the 3 models of replication propose? | show 🗑
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Semi-conservative | show 🗑
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Conservative | show 🗑
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Dispersive | show 🗑
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show | a. 2 parental strands separate and serves as template strands.
b. new nucleotides must obey the AT/GC rule
c. end results with 2 new double helix and with same base sequence as original
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What is the origin of replication? | show 🗑
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Which way is replication going? | show 🗑
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How is bacteria and eukaryotic differ in their replication? | show 🗑
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show | it forms an opening called a replication bubble that forms two replication folks.
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show | near the folk
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How is DNA synthesis begins? | show 🗑
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show | Made in direction fork is moving and synthesize as one long continuous strand and only require one primer
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Lagging strand | show 🗑
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Synthesize Lagging strand | show 🗑
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DNA helicase | show 🗑
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show | relieves additional coiling ahead of replication fork
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show | keep parental strands single-stranded, so they can act as template
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DNA polymerase | show 🗑
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Deoxynucleoside triphosphate | show 🗑
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show | 1. unable to initiate DNA synthesis if there is no template strand. Primase must make a short RNA primer and then primer is then removed and replaced with DNA
2. DNA polymerase can only add nucleotides in a 5 to 3 prime direction
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show | 1. Polymerase III which is responsible for replication
2. DNA polymerase I has single subunit which is to remove RNA primer and fills in DNA
3. DNA II, IV involved in repair and replicate damage DNA
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What happen if there is not any template strand to go off? | show 🗑
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Telomeres | show 🗑
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Telomerase | show 🗑
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mung44
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