Question 1

The phase of mitosis in which the chromosomes condense and centrosomes move to opposite poles of the cell is

Accepted Answer

A)  interphase.
B)  metaphase.
C)  prophase.
D)  anaphase.
E)  telophasE.F) B) and C)
G) None of the above

Question 2

The phase of mitosis in which the nuclear envelope begins to reform around chromosomes is

Accepted Answer

A)  prophase.
B)  interphase.
C)  metaphase.
D)  anaphase.
E)  telophasE.F) C) and D)
G) A) and E)

Question 3

In a sexual life cycle,a zygote (fertilized egg) grows to an adult by

Accepted Answer

A)  meiosis.
B)  fertilization.
C)  meiosis and fertilization.
D)  mitosis.
E)  All answers are correct.F) B) and C)
G) None of the above

Question 4

The correct sequence for the phases of the eukaryotic cell cycle is

Accepted Answer

A)  interphase - prophase - metaphase - anaphase - telophase - cytokinesis.
B)  interphase - metaphase - anaphase - telophase.
C)  prophase - anaphase - metaphase - telophase.
D)  interphase - prophase - cytokinesis - anaphase - telophase.
E)  metaphase - anaphase - interphase - prophase - telophase - cytokinesis.F) C) and E)
G) A) and D)

Question 5

Mutations may be caused by

Accepted Answer

A)  errors in prokaryotic replication.
B)  exposure to radiation.
C)  exposure to chemicals.
D)  errors in eukaryotic replication.
E)  All answers are correct.F) B) and D)
G) A) and B)

Question 6

The phase of mitosis in which the centromeres split and sister chromatids are pulled to opposite poles of the cell is

Accepted Answer

A)  prophase.
B)  anaphase.
C)  interphase.
D)  metaphase.
E)  telophasE.F) B) and C)
G) A) and E)

Question 7

In the section "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer",the standard chemotherapy drug forms crosslinks between the two strands of DNA in a chromosome.How is this effective in chemotherapy?

Accepted Answer

A)  It blocks cytokinesis.
B)  It delays DNA replication.
C)  It activates the cell cycle.
D)  It activates cytokinesis.
E)  It aids spindle fibers in anaphasE.F) A) and D)
G) A) and C)

Question 8

Binary fission produces ______ cells,mitosis produces ______ cells,and meiosis produces ______ cells.

Accepted Answer

A)  prokaryotic;eukaryotic body;eukaryotic sex
B)  genetic;body;sex
C)  eukaryotic;prokaryotic body;prokaryotic sex
D)  genetically-different;genetically-identical;genetically-different
E)  genetically-identical;genetically-different;genetically-identicalF) A) and B)
G) C) and E)

Question 9

When DNA replicates

Accepted Answer

A)  the original DNA is not affected and a new double-stranded DNA is made from two new strands of DNA.
B)  one strand of the original DNA ends up in each of the new DNA molecules.
C)  the original DNA unwinds,and multiple copies of a region are transcribed before the DNA closes back up.
D)  transcription factors determine where to begin DNA replication.
E)  a cell that was diploid (2N) will now be tetraploid (4N) .F) A) and B)
G) A) and C)

Question 10

The first sign of cytokinesis in an animal cell is the formation of a

Accepted Answer

A)  cell plate.
B)  cleavage furrow.
C)  cell wall.
D)  nucleolus.
E)  nuclear envelopE.F) A) and E)
G) A) and B)

Question 11

The two main stages of the eukaryotic cell cycle are

Accepted Answer

A)  interphase and cytokinesis.
B)  interphase and mitosis.
C)  mitosis and cytokinesis.
D)  interphase and prophase.
E)  mitosis and meiosis.F) C) and E)
G) B) and C)

Question 12

In the section "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer",what hypothesis were the researchers testing by treating tumors with endostatin and the standard chemotherapy drug?

Accepted Answer

A)  Endostatin works on endothelial cells,and therefore natural selection for resistance will not occur in tumor cells.
B)  Endostatin works on tumor cells,and therefore natural selection for resistance will not occur in endothelial cells.
C)  The standard chemotherapy drug works on endothelial cells,and therefore natural selection for resistance will not occur in tumor cells.
D)  The standard chemotherapy drug works on tumor cells,and therefore natural selection for resistance will not occur in endothelial cells.E) All of the above
F) C) and D)

Question 13

The plant cell in the image labeled "d" is in the cell cycle stage

Accepted Answer

A)  metaphase.
B)  anaphase.
C)  prophase.
D)  telophase.
E)  interphasE.F) B) and D)
G) A) and B)

Question 14

How does the space between our fingers arise?

Accepted Answer

A)  The cells form by apoptosis.
B)  Mitosis of the cells is blocked.
C)  The cells die by apoptosis.
D)  Meiosis of the cells is blockeD.
E)  The cells become part of the fingers.F) A) and B)
G) None of the above

Question 15

During cytokinesis of a plant cell,the cell divides by forming a cleavage furrow.

Accepted Answer

A) True 
 B)False

Question 16

The enzyme that adds nucleotides to form new strands of DNA is

Accepted Answer

A)  interphase.
B)  prophase.
C)  ligase.
D)  helicase.
E)  DNA polymerasE.F) A) and E)
G) A) and C)

Question 17

A part of a chromosome that attaches sister chromatids to each other defines the term

Accepted Answer

A)  chromatin.
B)  nucleosome.
C)  centromere.
D)  histone.
E)  None of the answers are correctF) A) and E)
G) A) and B)

Question 18

In an asexual life cycle,cells reproduce by

Accepted Answer

A)  meiosis.
B)  fertilization.
C)  meiosis and fertilization.
D)  mitosis.
E)  All answers are correct.F) A) and B)
G) B) and E)

Question 19

DNA's sugar-phosphate backbones are joined with

Accepted Answer

A)  ionic bonds.
B)  hydrogen bonds.
C)  weak chemical bonds.
D)  covalent bonds.E) A) and B)
F) All of the above

Question 20

If one strand of a DNA molecule has the base sequence of 5' CGGCATTA 3' the complementary strand of DNA will read

Accepted Answer

A)  3' CGGCATTA 5'.
B)  3' ATTACGGC 5'.
C)  3' GCCGTUUT 5'.
D)  3' GCCGTAAT 5'.
E)  3' TAATGCCG 5'.F) None of the above
G) C) and D)

Exam 8: DNA Replication and Cell Division

In an asexual life cycle,cells reproduce by

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The enzyme that adds nucleotides to form new strands of DNA is

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The phase of mitosis in which the chromosomes condense and centrosomes move to opposite poles of the cell is

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If one strand of a DNA molecule has the base sequence of 5' CGGCATTA 3' the complementary strand of DNA will read

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In the section "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer",the standard chemotherapy drug forms crosslinks between the two strands of DNA in a chromosome.How is this effective in chemotherapy?

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The phase of mitosis in which the centromeres split and sister chromatids are pulled to opposite poles of the cell is

Correct AnswerverifiedShow Answer

Binary fission produces ______ cells,mitosis produces ______ cells,and meiosis produces ______ cells.

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The first sign of cytokinesis in an animal cell is the formation of a

Correct AnswerverifiedShow Answer

A part of a chromosome that attaches sister chromatids to each other defines the term

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DNA's sugar-phosphate backbones are joined with

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When DNA replicates

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The phase of mitosis in which the nuclear envelope begins to reform around chromosomes is

Correct AnswerverifiedShow Answer

The correct sequence for the phases of the eukaryotic cell cycle is

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Mutations may be caused by

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The two main stages of the eukaryotic cell cycle are

Correct AnswerverifiedShow Answer

In a sexual life cycle,a zygote (fertilized egg) grows to an adult by

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer",what hypothesis were the researchers testing by treating tumors with endostatin and the standard chemotherapy drug?

Correct AnswerverifiedShow Answer

During cytokinesis of a plant cell,the cell divides by forming a cleavage furrow.

Correct AnswerverifiedShow Answer

How does the space between our fingers arise?

Correct AnswerverifiedShow Answer

The plant cell in the image labeled "d" is in the cell cycle stage

Correct AnswerverifiedShow Answer

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Binary fission produces cells,mitosis produces cells,and meiosis produces __ cells.

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