Question 1

In some organisms, mitosis occurs without cytokinesis. This results in

Accepted Answer

A)  cell death. 
B)  a multinucleated cell. 
C)  cells arrested in the G0 phase. 
D)  cells with no nucleus. 
E)  uncontrolled cell division. 
A)  cell death. 
B)  a multinucleated cell. 
C)  cells arrested in the G0 phase. 
D)  cells with no nucleus. 
E)  uncontrolled cell division.

Question 2

Cancer cells require many nutrients, which are supplied by blood vessels. The growth of new blood vessels to cancerous tissue is called

Accepted Answer

A)  angiogenesis. 
B)  metastasis. 
C)  carcinogenesis. 
D)  apotosis. 
A)  angiogenesis. 
B)  metastasis. 
C)  carcinogenesis. 
D)  apotosis.

Question 3

Generally, brain and nerve cells are not able to regenerate after injury because they have left the cell cycle and are unable to return.

Accepted Answer

A) True 
 B)False

Question 4

Contact inhibition stops normal cells from dividing when they come in contact with neighboring cells, but this is not functional in cancer cells.

Accepted Answer

A) True 
 B)False

Question 5

Name the labeled structures in the figure and answer the following questions.
   
A. _______________
B. _______________
C. _______________

Accepted Answer

D. When the structures labeled A separat

Question 6

The function of mitosis is:

Accepted Answer

A)  growth of the organism and tissue repair. 
B)  to ensure that each new cell receives a complete set of genetic information. 
C)  asexual reproduction in some species. 
D)  All of the choices are correct. 
A)  growth of the organism and tissue repair. 
B)  to ensure that each new cell receives a complete set of genetic information. 
C)  asexual reproduction in some species. 
D)  All of the choices are correct.

Question 7

If a parent cell has 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis occurs?

Accepted Answer

A)  24 chromosomes 
B)  48 chromosomes 
C)  12 chromosomes 
D)  96 chromosomes 
A)  24 chromosomes 
B)  48 chromosomes 
C)  12 chromosomes 
D)  96 chromosomes

Question 8

Apoptosis refers to cell death and

Accepted Answer

A)  is always biologically detrimental to an organism. 
B)  is merely the accumulation of genetic errors. 
C)  is any failure of the genetic machinery to work properly. 
D)  is a failure in the translation or transcription mechanism. 
E)  can be programmed and is essential to normal development. 
A)  is always biologically detrimental to an organism. 
B)  is merely the accumulation of genetic errors. 
C)  is any failure of the genetic machinery to work properly. 
D)  is a failure in the translation or transcription mechanism. 
E)  can be programmed and is essential to normal development.

Question 9

What is the result of a cell not meeting the criteria to pass the G1 checkpoint?

Accepted Answer

A)  The cell cycle halts. 
B)  The cell may enter the G0 stage. 
C)  The cell may undergo apoptosis. 
D)  All of these. 
E)  None of these. 
A)  The cell cycle halts. 
B)  The cell may enter the G0 stage. 
C)  The cell may undergo apoptosis. 
D)  All of these. 
E)  None of these.

Question 10

Virtually all specialized cells of multicellular organisms

Accepted Answer

A)  develop through mutation from less specialized cells of the organism. 
B)  contain more genetic material than less specialized cells of the same organism. 
C)  contain less genetic material than less specialized cells of the same organism. 
D)  have the same amount of DNA and the same number of chromosomes as all other cells of the organism and develop from the same basic stem cells. 
A)  develop through mutation from less specialized cells of the organism. 
B)  contain more genetic material than less specialized cells of the same organism. 
C)  contain less genetic material than less specialized cells of the same organism. 
D)  have the same amount of DNA and the same number of chromosomes as all other cells of the organism and develop from the same basic stem cells.

Question 11

are ordinarily held in check by inhibitors.

Accepted Answer

A) True 
 B)False

Question 12

Which represents the correct sequence of stages in the cell cycle?

Accepted Answer

A)  G1, G2, S, M 
B)  G1, G2, M, S 
C)  G1, M, G2, S 
D)  G1, S, G2, M 
A)  G1, G2, S, M 
B)  G1, G2, M, S 
C)  G1, M, G2, S 
D)  G1, S, G2, M

Question 13

The region that contains the genetic information in a bacterial cell is called the

Accepted Answer

A)  nucleus. 
B)  nucleoid. 
C)  nucleolus. 
D)  nucleosome. 
E)  nucleoprotein. 
A)  nucleus. 
B)  nucleoid. 
C)  nucleolus. 
D)  nucleosome. 
E)  nucleoprotein.

Question 14

Although cancer may originate in many regions of the body, many patients die from cancerous growth in the lungs, lymph glands, or liver. This is most readily explained as

Accepted Answer

A)  spreading of cancer by angiogenesis. 
B)  metastasis occurring more commonly in organs that have a filter effect. 
C)  proteinase enzymes making cancer particularly damaging to these tissues. 
D)  growth anywhere but in these organs is called benign. 
E)  due to these organs simply being more susceptible to cancer. 
A)  spreading of cancer by angiogenesis. 
B)  metastasis occurring more commonly in organs that have a filter effect. 
C)  proteinase enzymes making cancer particularly damaging to these tissues. 
D)  growth anywhere but in these organs is called benign. 
E)  due to these organs simply being more susceptible to cancer.

Question 15

What occurs in anaphase?

Accepted Answer

A)  Centrioles move to opposite poles. 
B)  Chromosomes move to opposite poles. 
C)  Chromosomes line up along the equator of the dividing cell. 
D)  The nuclear envelope disappears. 
E)  The nuclear envelope is constructed. 
A)  Centrioles move to opposite poles. 
B)  Chromosomes move to opposite poles. 
C)  Chromosomes line up along the equator of the dividing cell. 
D)  The nuclear envelope disappears. 
E)  The nuclear envelope is constructed.

Question 16

Generally, complex organisms do require more genes to control their synthesis and organization than do primitive organisms. However, the numbers of chromosomes vary from ants with 2, molds with 8-14, humans with 46, potatoes with 100 and the crayfish with 200! Some birds and insects have chromosomes that dwindle in size into obscurity, so it is not possible to establish a diploid number. How do you explain this situation?

Accepted Answer

A)  There must be no relationship between amount of genetic information and complexity of the organism. 
B)  The number of genes per chromosome may vary among organisms, preventing a simple relationship between chromosome number and complexity. 
C)  Birds and insects probably cannot follow the same mitotic laws as other organisms. 
D)  All of the choices are correct. 
A)  There must be no relationship between amount of genetic information and complexity of the organism. 
B)  The number of genes per chromosome may vary among organisms, preventing a simple relationship between chromosome number and complexity. 
C)  Birds and insects probably cannot follow the same mitotic laws as other organisms. 
D)  All of the choices are correct.

Question 17

Which of the following is NOT true about cancer cells?

Accepted Answer

A)  They never fully differentiate. 
B)  They exhibit contact inhibition. 
C)  They exhibit uncontrolled growth. 
D)  They exhibit disorganized growth. 
E)  They may undergo metastasis. 
A)  They never fully differentiate. 
B)  They exhibit contact inhibition. 
C)  They exhibit uncontrolled growth. 
D)  They exhibit disorganized growth. 
E)  They may undergo metastasis.

Question 18

Which of the following statements applies to mitosis but not to cytokinesis?

Accepted Answer

A)  it contains a checkpoint that will evaluate the quality of the cell 
B)  requires a large amount of ATP in order for the cellular mechanisms to function 
C)  if it is disrupted it can lead to an abnormal cell 
D)  it results in two daughter cells that are half the size of the original cell 
A)  it contains a checkpoint that will evaluate the quality of the cell 
B)  requires a large amount of ATP in order for the cellular mechanisms to function 
C)  if it is disrupted it can lead to an abnormal cell 
D)  it results in two daughter cells that are half the size of the original cell

Question 19

Which statement below best describes the difference between mitosis and cytokinesis?

Accepted Answer

A)  Mitosis is the portion of the cell cycle that divides the nuclear material while cytokinesis divides the cytoplasm. 
B)  Mitosis is the portion of the cell cycle that divides the cytoplasm while cytokinesis divides the nuclear material. 
C)  Mitosis is the portion of the cell cycle that uses a contractile ring to divide the nuclear material while cytokinesis uses the contractile ring to divide the cell membrane. 
D)  Mitosis is the portion of the cell cycle that uses a cell plate to divide the cell membrane in plant cells while cytokinesis uses a contractile ring to divide the cell membrane in animal cells. 
A)  Mitosis is the portion of the cell cycle that divides the nuclear material while cytokinesis divides the cytoplasm. 
B)  Mitosis is the portion of the cell cycle that divides the cytoplasm while cytokinesis divides the nuclear material. 
C)  Mitosis is the portion of the cell cycle that uses a contractile ring to divide the nuclear material while cytokinesis uses the contractile ring to divide the cell membrane. 
D)  Mitosis is the portion of the cell cycle that uses a cell plate to divide the cell membrane in plant cells while cytokinesis uses a contractile ring to divide the cell membrane in animal cells.

Question 20

What phase of mitosis is pictured?

Accepted Answer

A)  prophase 
B)  prometaphase 
C)  metaphase 
D)  anaphase 
E)  telophase 
A)  prophase 
B)  prometaphase 
C)  metaphase 
D)  anaphase 
E)  telophase

Exam 9: The Cell Cycle and Cellular Reproduction

In some organisms, mitosis occurs without cytokinesis. This results in

Cancer cells require many nutrients, which are supplied by blood vessels. The growth of new blood vessels to cancerous tissue is called

Generally, brain and nerve cells are not able to regenerate after injury because they have left the cell cycle and are unable to return.

Contact inhibition stops normal cells from dividing when they come in contact with neighboring cells, but this is not functional in cancer cells.

Name the labeled structures in the figure and answer the following questions. A. _______________ B. _______________ C. _______________

The function of mitosis is:

If a parent cell has 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis occurs?

Apoptosis refers to cell death and

What is the result of a cell not meeting the criteria to pass the G1 checkpoint?

Virtually all specialized cells of multicellular organisms

are ordinarily held in check by inhibitors.

Which represents the correct sequence of stages in the cell cycle?

The region that contains the genetic information in a bacterial cell is called the

Although cancer may originate in many regions of the body, many patients die from cancerous growth in the lungs, lymph glands, or liver. This is most readily explained as

What occurs in anaphase?

Which of the following is NOT true about cancer cells?

Which of the following statements applies to mitosis but not to cytokinesis?

Which statement below best describes the difference between mitosis and cytokinesis?

What phase of mitosis is pictured?

A View of Life

Basic Chemistry

The Chemistry of Organic Molecules

Cell Structure and Function

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

Meiosis and Sexual Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy, Systematics, and Phylogeny

Viruses, Bacteria, and Archaea

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structureand Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Invertebrate Evolution

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Digestive Systems and Nutrition

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Neurons and Nervous Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Animal Development

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

Filters

Name the labeled structures in the figure and answer the following questions. A. _______ B. _ C. _________

What is the result of a cell not meeting the criteria to pass the G₁ checkpoint?