12.3
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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| The three possible models of replication were | ___Conservative____, semi-conservative, and dispersive.
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| Meselson & Stahl determined that replication was | __Semi-conservative____.
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| ___Helicase____ does what? | unwinds and separates the DNA.
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| __Topoisomerase____ does what? | relieves supercoiling.
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| What stranded binding protein coat the single stranded DNA to protect it from degradation? | Single
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| ___Primers____ are | small pieces of RNA to provide a 3’ hydroxyl group for DNA polymerase to add a
nucleotide and are provided by the enzyme primase.
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| DNA ____Polymerase____ | is the enzyme that adds the nucleotides to the newly growing DNA strand.
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| ___Replication_____ takes place in the | 5’ to 3’direction.
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| ___Telomeres____ are | the ends of the chromosome which track how many times a cell has replicated.
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| According to the video the leading strand replicates in a... | __Continuous__ manner, while the lagging
strand replicates in short pieces called Okazaki fragments.
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| What does Exonuclease do? | removes the RNA ___Primer__ from the new DNA strands.
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| What does DNA ___Ligase__ do? | joins all of the pieces of DNA in the new strands together by covalently bonding the
sugar phosphate backbone.
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| What is telomerase? | an enzyme that can maintain the ends of the chromosomes and is activated in
cancer.
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| Prokaryotes have a | __Circular____ chromosome.
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| In prokaryotes, DNA molecules are located in the | Nucleus
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| In eukaryotes, nearly all the DNA is found in the | Nucleus
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| The diagram below shows the process of DNA | replication
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| The main enzyme involved in linking individual nucleotides into DNA molecules is | DNA polymerase
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| During replication, which sequence of nucleotides would bond with the DNA sequence TATGA? | ATACT
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| In eukaryotic chromosomes, DNA is tightly coiled around proteins called | histones
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| When prokaryotic cells copy their DNA, replication begins at | one point on the DNA molecule
🗑
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| The three possible models of replication were | ___Conservative____, semi-conservative, and dispersive.
🗑
|
||||
| Meselson & Stahl determined that replication was | __Semi-conservative____.
🗑
|
||||
| ___Helicase____ does what? | unwinds and separates the DNA.
🗑
|
||||
| __Topoisomerase____ does what? | relieves supercoiling.
🗑
|
||||
| What stranded binding protein coat the single stranded DNA to protect it from degradation? | Single
🗑
|
||||
| ___Primers____ are | small pieces of RNA to provide a 3’ hydroxyl group for DNA polymerase to add a
nucleotide and are provided by the enzyme primase.
🗑
|
||||
| DNA ____Polymerase____ | is the enzyme that adds the nucleotides to the newly growing DNA strand.
🗑
|
||||
| ___Replication_____ takes place in the | 5’ to 3’direction.
🗑
|
||||
| ___Telomeres____ are | the ends of the chromosome which track how many times a cell has replicated.
🗑
|
||||
| According to the video the leading strand replicates in a... | __Continuous__ manner, while the lagging
strand replicates in short pieces called Okazaki fragments.
🗑
|
||||
| What does Exonuclease do? | removes the RNA ___Primer__ from the new DNA strands.
🗑
|
||||
| What does DNA ___Ligase__ do? | joins all of the pieces of DNA in the new strands together by covalently bonding the
sugar phosphate backbone.
🗑
|
||||
| What is telomerase? | an enzyme that can maintain the ends of the chromosomes and is activated in
cancer.
🗑
|
||||
| Prokaryotes have a | __Circular____ chromosome.
🗑
|
||||
| In prokaryotes, DNA molecules are located in the | Nucleus
🗑
|
||||
| In eukaryotes, nearly all the DNA is found in the | Nucleus
🗑
|
||||
| The diagram below shows the process of DNA | replication
🗑
|
||||
| The main enzyme involved in linking individual nucleotides into DNA molecules is | DNA polymerase
🗑
|
||||
| During replication, which sequence of nucleotides would bond with the DNA sequence TATGA? | ATACT
🗑
|
||||
| In eukaryotic chromosomes, DNA is tightly coiled around proteins called | histones
🗑
|
||||
| When prokaryotic cells copy their DNA, replication begins at | one point on the DNA molecule
🗑
|
||||
| Compared to eukaryotic cells, prokaryotic cells contain | about one thousandth as much DNA.
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| How many cells are present after 80 minutes? | 16
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| If the DNA of this bacterium is 4 million base pairs in length, how many total molecules of A,T,C, and G are required for replication to be successful? | 4 million
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Created by:
Masterlearner5