What step in DNA replication precedes the pairing of complementary bases? A. pol
ID: 94427 • Letter: W
Question
What step in DNA replication precedes the pairing of complementary bases?
A.
polymerization of DNA.
B.
formation of the histone core.
C.
mitotic division.
D.
separation of the two strands.
E.
joining of the two strands.
In eukaryotes, transcription occurs in the
A.
ribosome.
B.
mitochondria.
C.
cell membrane.
D.
cytoplasm.
E.
nucleus.
Normal human body cells contain how many chromosomes?
A.
46
B.
22
C.
23
D.
44
E.
42
Hershey and Chase performed an experiment in which they used radioactive isotopes to phosphorus and sulfur to label different components of bacterial viruses. Their results clearly showed that
A.
the viruses did not contain protein.
B.
genetic material normally contains radioactive isotopes.
C.
the viruses did not contain DNA.
D.
protein was entering into the infected bacteria.
E.
DNA was entering into the infected bacteria.
A package of histones with DNA wrapped around them forms spherical structures called
A.
nucleosomes.
B.
lysosomes.
C.
ribosomes.
D.
nucleoli.
E.
chromatin.
DNA replication
A.
does not require proteins.
B.
is constantly happening in a cell.
C.
occurs in G1 of interphase.
D.
takes place in the nucleus of the cell.
E.
occurs in the cytoplasm of the cell.
The two subunits of the ribosome join during
A.
promotion of transcription.
B.
initiation of translation.
C.
termination of transcription.
D.
termination of translation.
E.
elongation.
DNA replication of a single DNA molecule is referred to as semiconservative because
A.
each of the two DNA molecules will consist of one parental strand and one newly synthesized strand.
B.
all the DNA strands in the two DNA molecules will have both parental and newly synthesized DNA.
C.
it results in two nonidentical DNA molecules.
D.
of the two DNA molecules, one is made up totally of parental DNA, while the other is entirely newly synthesized DNA.
E.
one DNA strand is replicated continuously, while the other must be replicated discontinuously.
The bases are bonded to what part of the backbone of the DNA molecule?
A.
the 4’ carbon atom of the sugar molecule.
B.
the 3’ carbon atom of the sugar molecule.
C.
the 5’ carbon atom of the sugar molecule.
D.
the 1’ carbon atom of the sugar molecule.
E.
the 2’ carbon atom of the sugar molecule.
A.
polymerization of DNA.
B.
formation of the histone core.
C.
mitotic division.
D.
separation of the two strands.
E.
joining of the two strands.
Explanation / Answer
What step in DNA replication precedes the pairing of complementary bases?
D.separation of the two strands.
In eukaryotes, transcription occurs in the
E.nucleus.
Normal human body cells contain how many chromosomes?
A.46
Hershey and Chase performed an experiment in which they used radioactive isotopes to phosphorus and sulfur to label different components of bacterial viruses. Their results clearly showed that
E.DNA was entering into the infected bacteria.
A package of histones with DNA wrapped around them forms spherical structures called
A.nucleosomes.
DNA replication
D.takes place in the nucleus of the cell.
The two subunits of the ribosome join during
B.initiation of translation.
DNA replication of a single DNA molecule is referred to as semiconservative because
A. each of the two DNA molecules will consist of one parental strand and one newly synthesized strand.
The bases are bonded to what part of the backbone of the DNA molecule?
E.the 2’ carbon atom of the sugar molecule.
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