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DNA Structure and Replication

DNA Structure and Replication
The DNA polymerase in bacteria, responsible for DNA synthesis is

Polymerase III
all of these
Polymerase II
Polymerase I

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One medium band
One medium and one heavy band
One light, one medium and one heavy band
One light and one medium band

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DNA Structure and Replication
Which will require a higher temperature to denature?

RNA with a high G-C content
DNA with a high G-C content
DNA with a high A-T content
RNA with a high A-T content

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DNA Structure and Replication
There is a single origin for DNA replication in bacteria. How many origins of replication are found in the much larger genomes of eukaryotes such as mammals?

About 100
One
Thousands and tens of thousands
none of these

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DNA Structure and Replication
Which of the following species lack a 'classical' histone H1?

Strongylocentrotus purpuratus
Arabidopsis thaliana
Xenopus laevis
Saccharomyces cerevisiae

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DNA Structure and Replication
The nucleosome consists of histone

hexamer and 146 bp of DNA
tetramer and 146 bp of DNA
octamer and 146 bp of DNA
None of these

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