Question 1

The molecule that contains the information for making a cell's proteins and copies itself for the next generation of cells is

Accepted Answer

A)   DNA.
B)   ATP synthase.
C)   RNA.
D)   NAD.
E)   FAD.F) A) and E)
G) A) and B)

Question 2

A seedling plant has a section of the stem tip that contains large numbers of cells undergoing mitosis for the purpose of

Accepted Answer

A)   sexual reproduction of gametes, to produce new offspring.
B)   growth in height of the plant.
C)   replication of the DNA in the stem, where new flowers will go through meiosis.
D)   asexual reproduction of gametes, to produce new offspring.
E)   fertilization of the gametes in order to produce new offspring.F) B) and E)
G) A) and C)

Question 3

Why would a cancer cell need to induce angiogenesis?

Accepted Answer

A)   It would activate oncogenes.
B)   Cells in the center of a tumor would benefit from a larger blood supply.
C)   Cells could then produce proteins that avoid checkpoints in the cell cycle.
D)   It is another name for stage I in metastasis.
E)   It would inactivate tumor suppressors.F) C) and E)
G) B) and C)

Question 4

Figuer: 
-What did the researchers conclude based on the data in figure (a) ?

Accepted Answer

A)   Cyclophosphamide delayed the growth of tumors but resistance developed.
B)   Endostatin shrunk tumors without development of resistance.
C)   Endostatin shrunk tumors but resistance developed.
D)   Tumors in untreated cells shrank in size.
E)   Cyclophosphamide delayed the growth of tumors without development of resistance.F) B) and D)
G) A) and D)

Question 5

After replication,in eukaryotes,both the original and its replicated copy chromosome are each called a

Accepted Answer

A)   chromosome.
B)   centromere.
C)   chromatin.
D)   sister chromatid.
E)   nucleosome.F) B) and D)
G) B) and E)

Question 6

The process by which a sperm cell combines with an egg cell is

Accepted Answer

A)   replication.
B)   germination.
C)   mitosis.
D)   fertilization.
E)   recombination.F) B) and E)
G) A) and B)

Question 7

Figuer:
This diagram shows the steps in mitosis, with labels to reference in the questions below. 
-The phase of mitosis in which the chromosomes condense and centrosomes move to opposite poles of the cell is

Accepted Answer

A)   B, which is prometaphase.
B)   C, which is metaphase.
C)   D, which is anaphase.
D)   E, which is telophase.
E)   A, which is prophase.F) A) and B)
G) A) and D)

Question 8

Figuer:
This diagram shows the steps in mitosis, with labels to reference in the questions below. 
-The structure that organizes the protein subunits of the mitotic spindle is the

Accepted Answer

A)   centrosome.
B)   centromere.
C)   microfilaments.
D)   kinetochore.
E)   cytoskeleton.F) All of the above
G) A) and B)

Question 9

The process that replicates the DNA,and then divides a prokaryotic cell into two daughter cells is

Accepted Answer

A)   synthesis.
B)   replication.
C)   metastasis.
D)   binary fission.
E)   mitosis.F) D) and E)
G) A) and D)

Question 10

In the biology lab,you are shown petri dishes of cheek cell cultures.One set of cells is thin,with individual cells arranged in a single,orderly layer.The other culture shows irregular crowding of cells.The crowding cells are likely cancer cells,showing an absence of

Accepted Answer

A)   oncogenes.
B)   contact inhibition.
C)   All of these answers are visually characteristic of cancer cells.
D)   angiogenesis.
E)   telomerases.F) A) and B)
G) B) and D)

Question 11

If a cancer metastasizes,its cells travel through the bloodstream or the lymphatic system and colonize other areas of the body.

Accepted Answer

A) True 
 B)False

Question 12

Prokaryotic cells reproduce by forming gametes that will unite in fertilization.

Accepted Answer

A) True 
 B)False

Question 13

Figuer:
This diagram shows the steps in mitosis, with labels to reference in the questions below. 
-In which of these mitosis phases is the replication of DNA accomplished?

Accepted Answer

A)   None of these answer options are correct, because replication does not happen during mitosis.
B)   A, which is mitosis.
C)   C, which is telophase.
D)   A, which is prophase.
E)   E, which is cytokinesis.F) A) and E)
G) All of the above

Question 14

What hypothesis did Boehm,et al.develop after testing mice (initially) and eventually humans?

Accepted Answer

A)   Because endostatin works on endothelial cells, natural selection for resistance may arise in tumor cells not initially killed.
B)   Because endostatin works on tumor cells, natural selection for resistance will not occur in endothelial cells.
C)   Because cyclophosphamide works on endothelial cells, natural selection for resistance will not occur in tumor cells.
D)   Because cyclophosphamide works on tumor cells, natural selection for resistance will not occur in endothelial cells.E) B) and C)
F) None of the above

Question 15

Apoptosis is a name for the process of

Accepted Answer

A)   mitosis.
B)   programmed cellular reproduction.
C)   replication.
D)   programmed cell death.
E)   the cell cycle.F) A) and B)
G) A) and E)

Question 16

Before any cell divides into two daughter cells,it must first duplicate its

Accepted Answer

A)   entire genome.
B)   cell membrane structure.
C)   All of the answer choices are correct.
D)   cytoplasmic contents.
E)   array of enzymes.F) A) and D)
G) C) and D)

Question 17

The two main stages of the eukaryote cell cycle,in which the cell spends most of its time and metabolic energy,are

Accepted Answer

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

Question 18

Figuer: 
-What is the dependent variable in this figure?

Accepted Answer

A)   treatment with cyclophosphamide
B)   treatment days
C)   treatment with endostatin
D)   the volume of the tumorE) B) and C)
F) A) and D)

Question 19

Figuer:
This diagram shows how DNA is packaged and folded with its associated protective and regulatory proteins. 
-A nucleosome consists of

Accepted Answer

A)   two or more closely related genes.
B)   a ribosome and RNA.
C)   a stretch of DNA.
D)   a stretch of DNA and histones.
E)   an RNA molecule.F) None of the above
G) B) and C)

Question 20

When studying endostatin,why did Boehm et al.induce cancer in mice by injecting cancer cells,instead of just doing the experiment on isolated cancer cells in culture?

Accepted Answer

A)   Oncogenes are only active in whole tumors.
B)   Tumor suppressors are only active in whole tumors.
C)   Cancer cells can go through angiogenesis in culture.
D)   Cancer cells cannot be grown outside of the body in culture.
E)   Angiogenesis involves multiple tissues in a whole organism.F) C) and D)
G) B) and E)

Exam 8: DNA Replication, mitosis, and the Cell Cycle

Figuer: This diagram shows the steps in mitosis, with labels to reference in the questions below. -The phase of mitosis in which the chromosomes condense and centrosomes move to opposite poles of the cell is

Correct AnswerverifiedShow Answer

Before any cell divides into two daughter cells,it must first duplicate its

Correct AnswerverifiedShow Answer

After replication,in eukaryotes,both the original and its replicated copy chromosome are each called a

Correct AnswerverifiedShow Answer

What hypothesis did Boehm,et al.develop after testing mice (initially) and eventually humans?

Correct AnswerverifiedShow Answer

A seedling plant has a section of the stem tip that contains large numbers of cells undergoing mitosis for the purpose of

Correct AnswerverifiedShow Answer

Figuer: -What is the dependent variable in this figure?

Correct AnswerverifiedShow Answer

In the biology lab,you are shown petri dishes of cheek cell cultures.One set of cells is thin,with individual cells arranged in a single,orderly layer.The other culture shows irregular crowding of cells.The crowding cells are likely cancer cells,showing an absence of

Correct AnswerverifiedShow Answer

Why would a cancer cell need to induce angiogenesis?

Correct AnswerverifiedShow Answer

The two main stages of the eukaryote cell cycle,in which the cell spends most of its time and metabolic energy,are

Correct AnswerverifiedShow Answer

Figuer: -What did the researchers conclude based on the data in figure (a) ?

Correct AnswerverifiedShow Answer

The molecule that contains the information for making a cell's proteins and copies itself for the next generation of cells is

Correct AnswerverifiedShow Answer

The process by which a sperm cell combines with an egg cell is

Correct AnswerverifiedShow Answer

Prokaryotic cells reproduce by forming gametes that will unite in fertilization.

Correct AnswerverifiedShow Answer

If a cancer metastasizes,its cells travel through the bloodstream or the lymphatic system and colonize other areas of the body.

Correct AnswerverifiedShow Answer

Figuer: This diagram shows the steps in mitosis, with labels to reference in the questions below. -In which of these mitosis phases is the replication of DNA accomplished?

Correct AnswerverifiedShow Answer

Figuer: This diagram shows how DNA is packaged and folded with its associated protective and regulatory proteins. -A nucleosome consists of

Correct AnswerverifiedShow Answer

Apoptosis is a name for the process of

Correct AnswerverifiedShow Answer

The process that replicates the DNA,and then divides a prokaryotic cell into two daughter cells is

Correct AnswerverifiedShow Answer

Figuer: This diagram shows the steps in mitosis, with labels to reference in the questions below. -The structure that organizes the protein subunits of the mitotic spindle is the

Correct AnswerverifiedShow Answer

When studying endostatin,why did Boehm et al.induce cancer in mice by injecting cancer cells,instead of just doing the experiment on isolated cancer cells in culture?

Correct AnswerverifiedShow Answer

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