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DNA Structure and Replication

DNA Structure and Replication
The 5' and 3' numbers are related to the

carbon number in sugar
length of the DNA strand
the number of phosphates
the base pair rule

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Formation of thymine dimers
Dehydration
Depurination
Single strand break

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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
none of these
Thousands and tens of thousands

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DNA Structure and Replication
Which of the following are short nucleotides strands made by DNA polymerase working in the opposite direction of the replication fork?

Leading strands
Primers
Lagging strand
Okazaki fragments

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

none of these
helix frequency
linking number
twisting number

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DNA Structure and Replication
During conventional transformation experiments E. coli cells and plasmid DNA interacts in an environment of

low temperature and Mg++
low temperature and Ca++
high temperature and Ca++
high temperature and Mg++

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