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DNA Structure and Replication

DNA Structure and Replication
Which of the following is not a structural motif in DNA binding proteins?

helix-turn-helix
TFIID
bZIP
zinc finger

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DNA Structure and Replication
TM refers to the temperature at which

All of these
membranes are 50% fluid
50% of a protein molecules are denatured
50% of a DNA molecule is denatured

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DNA Structure and Replication
Which enzyme catalyzes the elongation of DNA molecules?

Helicase
Primase
DNA ligase
DNA polymerase

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DNA Structure and Replication
Which histone(s) are associated with the linker DNA of a nucleosome?

Histones H2A and H2B
Histone H4
Histone H1
Histone H3

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DNA Structure and Replication
Klenow fragment without free nucleotides exhibits

exonuclease activity
nickase activity
no activity
endonuclease activity

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DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

helicase
DNA polymerase
strandase
none of these

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