Question 1

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.E) A) and D)
F) A) and C)

Question 2

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, ME) A) and C)
F) A) and D)

Question 3

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.F) D) and E)
G) A) and B)

Question 4

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.F) D) and E)
G) B) and E)

Question 5

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 cellE) B) and C)
F) A) and B)

Question 6

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.F) A) and B)
G) A) and D)

Question 7

are ordinarily held in check by inhibitors.

Accepted Answer

A) True 
 B)False

Question 8

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 9

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.E) B) and C)
F) A) and B)

Question 10

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.F) C) and D)
G) A) and D)

Question 11

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.E) B) and D)
F) A) and D)

Question 12

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 13

What phase of mitosis is pictured?

Accepted Answer

A)   prophase
B)   prometaphase
C)   metaphase
D)   anaphase
E)   telophaseF) C) and D)
G) B) and C)

Question 14

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.F) B) and D)
G) C) and E)

Question 15

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.F) All of the above
G) B) and D)

Question 16

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 17

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 chromosomesE) A) and D)
F) A) and B)

Question 18

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.E) A) and D)
F) A) and C)

Question 19

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.F) A) and B)
G) A) and E)

Question 20

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.E) A) and C)
F) A) and B)

Exam 9: The Cell Cycle and Cellular Reproduction

Virtually all specialized cells of multicellular organisms

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Which of the following is NOT true about cancer cells?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

are ordinarily held in check by inhibitors.

Correct Answer
verified

Correct Answer
verified

What occurs in anaphase?

Correct Answer
verified

What phase of mitosis is pictured?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified
D. When the structures labeled A separat...
View Answer

The function of mitosis is:

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Apoptosis refers to cell death and

Correct Answer
verified

Exam 9: The Cell Cycle and Cellular Reproduction

Virtually all specialized cells of multicellular organisms

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is NOT true about cancer cells?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

are ordinarily held in check by inhibitors.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What occurs in anaphase?

Correct AnswerverifiedShow Answer

What phase of mitosis is pictured?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedD. When the structures labeled A separat...View AnswerShow Answer

The function of mitosis is:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Apoptosis refers to cell death and

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified
D. When the structures labeled A separat...
View Answer

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified