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harlequincicada314Lv1

28 Sep 2019

The semiconservative model for DNA replication is characterized by

A. Two parental strands separate and serve as a template

B. "New made, complimentary DNA strands are formed in each daughter cell."

C. After two rounds of replication, all daughter cells will have some DNA components from the original parent cell.

D. A & B

E. A, B, & C

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28 Sep 2019

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Related questions

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 4â carbon atom of the sugar molecule.
	B.	the 3â carbon atom of the sugar molecule.
	C.	the 5â carbon atom of the sugar molecule.
	D.	the 1â carbon atom of the sugar molecule.
	E.	the 2â carbon atom of the sugar molecule.

1.If scientists could increase telomerase production in specific cells, the primary reason for this would most likely be the stopping of

A. meiosis.

B. aerobic respiration.

C. cancer cell formation.

D. All of the answer choices are correct.

E. aging of cells.

2. When DNA replicates

A. the original DNA unwinds, and multiple copies of a region are transcribed before the DNA closes back up.

B. transcription factors determine where to begin DNA replication.

C. None of the answer choices are correct.

D.one strand of the original DNA ends up in each of the new DNA molecules.

E. the original DNA is not affected and a new double-stranded DNA is made from two new strands of DNA.

3. In the biology lab, you observe three different animal cells under a microscope. In one cell, the nucleus is uniformly filled, with no distinct chromosome structure visible. In another, you see the nucleus with two nucleolus areas of more compact chromatin. A third cell is in mitosis, and distinct chromosome strands are visible. The value in packaging DNA in tighter forms of chromatin is for

A. mobility and protection of the DNA molecule during mitosis.

B. prevention of ligase enzyme action during replication.

C. Both answers regarding DNA mobility, protection and regulation in mitosis and transcription are correct.

D. regulation and protection of the DNA during transcription.

E.insuring that sister chromatids will be attached prior to replication.

45. The phospholipids of the plasma membrane are_____________________.

A) Hydrophobic

B) Hydrophilic

C) Both hydrophobic and hydrophilic

D) Uncharged

48. The plasma membrane is _________________________.

A) Completely permeable

B) Impermeable

C) Selectively permeable

D) Found only in eukaryotic cells

49. Meiosis results in ________________________.

A) 2 haploid daughter cells

B) 2 diploid daughter cells

C) 4 haploid daughter cells

D) 4 diploid daughter cells

52. If a thousand offspring of a cross have the genotype Aa, theparents of the cross can be symbolized as:

A) AA x aa

B) Aa x Aa

C) Aa x aa

D) AA x Aa

54. The replication of DNA_________________________________________.

A) Produces RNA molecules

B) Produces complementary new strands of DNA

C) Produces two DNA molecules, each of which is half-new andhalf-old

D) Generates excessive DNA, which eventually causes the nucleusto divide

55. Information stored in DNA is transferred from the nucleus tothe cytoplasm of eukaryotic cells in the form of______________________.

A) DNA

B) RNA

C) Lipids

D) Proteins

6.) A nitrogen atom that has no charge has five protons and________________electrons

10.) Organic compounds consist mainly of_______________atoms

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