Question 1

Which term is best associated with a synapsed pair of homologous chromosomes?

Accepted Answer

A)  a pair of sister chromatids attached at the centromere 
B)  unpackaged DNA 
C)  a tetrad 
D)  the mitotic spindle 
A)  a pair of sister chromatids attached at the centromere 
B)  unpackaged DNA 
C)  a tetrad 
D)  the mitotic spindle

Question 2

Gametes are produced by meiosis rather than mitosis because

Accepted Answer

A)  mitosis would produce too many sister cells. 
B)  meiosis reduces the chromosome number so that zygotes produced will have one full genome. 
C)  meiosis doubles the chromosome number so that each gamete has twice the usual number of genes. 
D)  meiosis ensures that the gametes are identical to the cell that produced them. 
A)  mitosis would produce too many sister cells. 
B)  meiosis reduces the chromosome number so that zygotes produced will have one full genome. 
C)  meiosis doubles the chromosome number so that each gamete has twice the usual number of genes. 
D)  meiosis ensures that the gametes are identical to the cell that produced them.

Question 3

Some daughter cells are described as clones.For this description to be appropriate,the daughter cells must

Accepted Answer

A)  show the same differentiation characteristics as the parent cell. 
B)  separate from one another and experience an independent existence. 
C)  contain a set of DNA that is identical to that of the parent cell. 
D)  have been produced by meiotic cell division. 
A)  show the same differentiation characteristics as the parent cell. 
B)  separate from one another and experience an independent existence. 
C)  contain a set of DNA that is identical to that of the parent cell. 
D)  have been produced by meiotic cell division.

Question 4

Which of the following predicts a likely outcome of bypassing the G₂ checkpoint in the cell cycle?

Accepted Answer

A)  Damaged DNA would be immediately replicated and passed on to the two daughter cells, giving rise to helpful, new alleles. 
B)  Incompletely replicated DNA may be passed to the two daughter cells; these cells could be lacking specific genes or chromosomes and would likely not survive. 
C)  The cell cycle would pause if cell size or nutrient supply is inadequate, DNA is damaged, or DNA replication is incomplete. 
D)  The cell cycle would simply skip mitosis and go directly to G1 to start over. 
A)  Damaged DNA would be immediately replicated and passed on to the two daughter cells, giving rise to helpful, new alleles. 
B)  Incompletely replicated DNA may be passed to the two daughter cells; these cells could be lacking specific genes or chromosomes and would likely not survive. 
C)  The cell cycle would pause if cell size or nutrient supply is inadequate, DNA is damaged, or DNA replication is incomplete. 
D)  The cell cycle would simply skip mitosis and go directly to G1 to start over.

Question 5

Match the event or stage of meiosis with the appropriate drawing.
-

Accepted Answer

A) prophase I 
B) metaphase I 
C) anaphase I 
D) telophase I and cytokinesis I 
E) prophase II
F)metaphase II
G)anaphase II
H)telophase II and cytokinesis II 
A) prophase I 
B) metaphase I 
C) anaphase I 
D) telophase I and cytokinesis I 
E) prophase II
F)metaphase II
G)anaphase II
H)telophase II and cytokinesis II

Question 6

Match the stage of the cell cycle with the appropriate description.
-G₁ phase

Accepted Answer

A) Duplicated chromosomes are separated during this phase. 
B) Cells prepare to divide and check that the proper steps have occurred for division. 
C) phase in which cells duplicate the genetic material 
D) resting stage assumed by cells that exit the cell cycle 
E) Two new daughter cells grow in preparation for division. 
A) Duplicated chromosomes are separated during this phase. 
B) Cells prepare to divide and check that the proper steps have occurred for division. 
C) phase in which cells duplicate the genetic material 
D) resting stage assumed by cells that exit the cell cycle 
E) Two new daughter cells grow in preparation for division.

Question 7

Per somatic nucleus,humans have 46 chromosomes arranged in 23 pairs of________ ; half of each came from the mother and half from the father.

Accepted Answer

homologous

Question 8

The last stage in the cell cycle is ________; this consists of ________,which separates the replicated DNA,and ________,which divides and portions the contents of the cell into two new daughter cells.

Accepted Answer

cell divis

Question 9

Which of the following is NOT a factor that influences a cell's progression through the cell cycle?

Accepted Answer

A)  gametes 
B)  cell cycle regulatory molecules 
C)  hormones 
D)  growth factors 
A)  gametes 
B)  cell cycle regulatory molecules 
C)  hormones 
D)  growth factors

Question 10

The number-one cancer responsible for deaths is ________; it is followed by ________ in females and ________ in males.

Accepted Answer

lung and bronchus ca

Question 11

Binary fission is the form of asexual reproduction that mainly occurs in ________ cells.

Accepted Answer

bacterial

Question 12

Homologous chromosomes

Accepted Answer

A)  are only found in bacterial cells. 
B)  are only in the cell during S phase. 
C)  consist of a maternal and paternal copy of each chromosome. 
D)  consist of six sister chromatids that are held together at the centrosome. 
A)  are only found in bacterial cells. 
B)  are only in the cell during S phase. 
C)  consist of a maternal and paternal copy of each chromosome. 
D)  consist of six sister chromatids that are held together at the centrosome.

Question 13

Patricia Hunt determined that bisphenol A (BPA)was hindering the process of meiosis in the ovaries of the mice in her experiment.BPA disrupted the ability of the chromosomes to separate into four haploid cells.Which of the following statements describes possible outcome(s)of this disruption?

Accepted Answer

A)  All four resulting cells will have exactly half the number of chromosomes found in the mother cell. 
B)  Three of the resulting cells will have exactly half the number of chromosomes found in the mother cell. The fourth cell will have double the chromosome number found in the mother cell. 
C)  Two of the resulting cells will have exactly half the number of chromosomes found in the mother cell. The other two cells will have exactly triple the chromosome number found in the mother cell. 
D)  Two of the resulting cells may have exactly half the chromosome number of the mother cell. One cell may have half the chromosome number of the mother cell plus one or more extra chromosomes, while the remaining cell would have less than half the number of chromosomes found in the mother cell. 
A)  All four resulting cells will have exactly half the number of chromosomes found in the mother cell. 
B)  Three of the resulting cells will have exactly half the number of chromosomes found in the mother cell. The fourth cell will have double the chromosome number found in the mother cell. 
C)  Two of the resulting cells will have exactly half the number of chromosomes found in the mother cell. The other two cells will have exactly triple the chromosome number found in the mother cell. 
D)  Two of the resulting cells may have exactly half the chromosome number of the mother cell. One cell may have half the chromosome number of the mother cell plus one or more extra chromosomes, while the remaining cell would have less than half the number of chromosomes found in the mother cell.

Question 14

A researcher is recording the process of bacteria cell division using time-lapse microscopy.Which of the following processes would she be observing?

Accepted Answer

A)  meiosis 
B)  mitosis 
C)  binary fission 
D)  She may be observing either meiosis or mitosis, depending on the growth conditions. 
A)  meiosis 
B)  mitosis 
C)  binary fission 
D)  She may be observing either meiosis or mitosis, depending on the growth conditions.

Question 15

When everything proceeds without error,the process of ________ produces ________ daughter cells that are genetically identical to the mother cell,while the process of ________ produces ________ daughter cells that have half the genetic information present in the mother cell.

Accepted Answer

mitosis; t

Question 16

What is the purpose of having cell cycle checkpoints? What are the consequences of not having them?

Accepted Answer

Cell cycle checkpoints ensure that cells

Question 17

Which of the following cell types is produced by meiosis?

Accepted Answer

A)  skin 
B)  muscle 
C)  pancreatic 
D)  sperm 
A)  skin 
B)  muscle 
C)  pancreatic 
D)  sperm

Question 18

Which of the following would promote a cell to move through the G₂ checkpoint?

Accepted Answer

A)  The cell lacks necessary nutrients. 
B)  The genetic information has been duplicated. 
C)  The cell is too small in size. 
D)  A chromosome has been damaged. 
A)  The cell lacks necessary nutrients. 
B)  The genetic information has been duplicated. 
C)  The cell is too small in size. 
D)  A chromosome has been damaged.

Question 19

An actively dividing cell has six chromosomes.How many sister chromatids are present within this cell at the end of G₂ phase?

Accepted Answer

A)  0 
B)  3 
C)  6 
D)  12 
A)  0 
B)  3 
C)  6 
D)  12

Question 20

A scientist wishing to generate cancerous cells in vitro could subject the cells to which of the following procedures?

Accepted Answer

A)  immerse the cells in water for extended periods of time 
B)  starve the cells of nutrients 
C)  expose cells to chemicals that disrupt mitosis 
D)  overfeed the cells by frequently feeding them 
A)  immerse the cells in water for extended periods of time 
B)  starve the cells of nutrients 
C)  expose cells to chemicals that disrupt mitosis 
D)  overfeed the cells by frequently feeding them

Exam 6: Cell Division

Which term is best associated with a synapsed pair of homologous chromosomes?

Gametes are produced by meiosis rather than mitosis because

Some daughter cells are described as clones.For this description to be appropriate,the daughter cells must

Which of the following predicts a likely outcome of bypassing the G₂ checkpoint in the cell cycle?

Match the event or stage of meiosis with the appropriate drawing. -

Match the stage of the cell cycle with the appropriate description. -G₁ phase

Per somatic nucleus,humans have 46 chromosomes arranged in 23 pairs of________ ; half of each came from the mother and half from the father.

The last stage in the cell cycle is ________; this consists of ________,which separates the replicated DNA,and ________,which divides and portions the contents of the cell into two new daughter cells.

Which of the following is NOT a factor that influences a cell's progression through the cell cycle?

The number-one cancer responsible for deaths is ________; it is followed by ________ in females and ________ in males.

Binary fission is the form of asexual reproduction that mainly occurs in ________ cells.

Homologous chromosomes

Patricia Hunt determined that bisphenol A (BPA)was hindering the process of meiosis in the ovaries of the mice in her experiment.BPA disrupted the ability of the chromosomes to separate into four haploid cells.Which of the following statements describes possible outcome(s)of this disruption?

A researcher is recording the process of bacteria cell division using time-lapse microscopy.Which of the following processes would she be observing?

When everything proceeds without error,the process of ________ produces ________ daughter cells that are genetically identical to the mother cell,while the process of ________ produces ________ daughter cells that have half the genetic information present in the mother cell.

What is the purpose of having cell cycle checkpoints? What are the consequences of not having them?

Which of the following cell types is produced by meiosis?

Which of the following would promote a cell to move through the G₂ checkpoint?

An actively dividing cell has six chromosomes.How many sister chromatids are present within this cell at the end of G₂ phase?

A scientist wishing to generate cancerous cells in vitro could subject the cells to which of the following procedures?

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

Life Is Cellular

How Cells Work

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants, Fungi, and Protists

Animals and Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Filters

The last stage in the cell cycle is ; this consists of ,which separates the replicated DNA,and ,which divides and portions the contents of the cell into two new daughter cells.

The number-one cancer responsible for deaths is ; it is followed by in females and in males.

When everything proceeds without error,the process of produces daughter cells that are genetically identical to the mother cell,while the process of produces daughter cells that have half the genetic information present in the mother cell.