Question 41 Bacteria use_______ to introduce negative supercoils into covalently

Question

Question 41

Bacteria use_______ to introduce negative supercoils into covalently-closed circular DNA.

DNA reductase

DNA gyrase

topisomerase I

toperisomerase II

none of the above

1 points

Question 42

Molecular biologists often use which of the following terms to refer to an inverted repeat structure in a nucleic acid?

duplex

promoter

enhancer

helices

palindrome

1 points

Question 43

In eukaryotes, DNA is partitioned into a number of chromosomes, each of which contains basic proteins called ______ bound to a single gigantic DNA molecule.

restriction enzymes

proteases

chaperone proteins

polymerases

histones

1 points

Question 44

________ or RPA is a type of SSB that has been isolated from eukaryotes including yeast and humans.

Replication protein A

Reverse protease A

Reverse protein A

Replication polymerase A

None of the above

1 points

Question 45

TM stands for ______________________.

melting temperature

mobile temperature

modeling temperature

motility temperature

none of the above

DNA reductase

DNA gyrase

topisomerase I

toperisomerase II

none of the above

Explanation / Answer

Question 41
Bacteria use_______ to introduce negative supercoils into covalently-closed circular DNA.
D.toperisomerase II

Question 42
Molecular biologists often use which of the following terms to refer to an inverted repeat structure in a nucleic acid?
E. palindrome

Question 43
In eukaryotes, DNA is partitioned into a number of chromosomes, each of which contains basic proteins called ______ bound to a single gigantic DNA molecule.
E. histones

Question 44
________ or RPA is a type of SSB that has been isolated from eukaryotes including yeast and humans.
A. Replication protein A

Question 45
TM stands for ______________________.
A.melting temperature

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