Question 1

Cytokinesis in plant cells differs from this process in animal cells because

Accepted Answer

A)  the plant endoplasmic reticulum forms a cell plate. 
B)  microtubules are laid down in a plywood-like cell plate pattern. 
C)  the Golgi apparatus produces vesicles that migrate along microtubules and fuse to become a cell plate. 
D)  the inner plasma membrane divides by cytokinesis as in animal cells and then secretes a cellulose cell wall. 
E)  asters coalesce to form a fibrous plate that reinforces with cellulose. 
A)  the plant endoplasmic reticulum forms a cell plate. 
B)  microtubules are laid down in a plywood-like cell plate pattern. 
C)  the Golgi apparatus produces vesicles that migrate along microtubules and fuse to become a cell plate. 
D)  the inner plasma membrane divides by cytokinesis as in animal cells and then secretes a cellulose cell wall. 
E)  asters coalesce to form a fibrous plate that reinforces with cellulose.

Question 2

Which statement is NOT true about mitosis?

Accepted Answer

A)  Mitosis is a process that duplicates and divides the nuclear contents only. 
B)  Mitosis produces two daughter cells that contain the same number of chromosomes as the parent cell. 
C)  Mitosis produces two daughter cells that contain the same kinds of chromosomes as the parent cell. 
D)  Mitosis uses a diploid (2n) parent cell to form daughter cells containing a haploid number(n) of chromosomes. 
E)  Mitosis is involved in development of a fertilized egg into a multicellular organism. 
A)  Mitosis is a process that duplicates and divides the nuclear contents only. 
B)  Mitosis produces two daughter cells that contain the same number of chromosomes as the parent cell. 
C)  Mitosis produces two daughter cells that contain the same kinds of chromosomes as the parent cell. 
D)  Mitosis uses a diploid (2n) parent cell to form daughter cells containing a haploid number(n) of chromosomes. 
E)  Mitosis is involved in development of a fertilized egg into a multicellular organism.

Question 3

Generally, animals build an organism using the diploid number of chromosomes. However, insects in the order of ants, wasps and bees can use a haploid-diploid system where adults of one sex are formed with a haploid number of chromosomes. This would mean that

Accepted Answer

A)  a single set of chromosomes is sufficient to code for a functional individual. 
B)  a female could determine the sex of the offspring by fertilizing or not fertilizing an egg. 
C)  the males and females are not equally "related" to their mothers considering the proportion of genes held in common. 
D)  All of the choices are true. 
E)  this system in no way differs from regular diploid organisms. 
A)  a single set of chromosomes is sufficient to code for a functional individual. 
B)  a female could determine the sex of the offspring by fertilizing or not fertilizing an egg. 
C)  the males and females are not equally "related" to their mothers considering the proportion of genes held in common. 
D)  All of the choices are true. 
E)  this system in no way differs from regular diploid organisms.

Question 4

are only present in the cell immediately before apoptosis begins.

Accepted Answer

A) True 
 B)False

Question 5

Apoptosis

Accepted Answer

A)  is programmed cell death. 
B)  is a process that acts to decrease the number of somatic cells. 
C)  frees the fingers and toes of the human embryo from their 'webbed' structure to independent structures. 
D)  All of the choices are correct. 
A)  is programmed cell death. 
B)  is a process that acts to decrease the number of somatic cells. 
C)  frees the fingers and toes of the human embryo from their 'webbed' structure to independent structures. 
D)  All of the choices are correct.

Question 6

Oncogenes are all of the following EXCEPT

Accepted Answer

A)  mutated proto-oncogenes. 
B)  cancer causing genes. 
C)  genes that stimulate uncontrolled cell divisions. 
D)  tumor suppressor genes. 
A)  mutated proto-oncogenes. 
B)  cancer causing genes. 
C)  genes that stimulate uncontrolled cell divisions. 
D)  tumor suppressor genes.

Question 7

Answer the following questions concerning the following figure.
   
A. Name the structure labeled A.
B. What process is occurring in the figure?
C. Is this an animal or plant cell? Explain

Accepted Answer

A. 'A' is the cleavage furrow.
B. Cytoki

Question 8

Which statement is NOT true about eukaryotic chromosomes?

Accepted Answer

A)  There is only one chromosome of each type in each body cell. 
B)  Chromosomes contain both DNA and associated histones. 
C)  Chromosomes condense from chromatin at the start of mitosis. 
D)  Chromosomes disperse back into chromatin at the end of mitosis. 
E)  Chromosomes are not located within the nuclear envelope during mitosis. 
A)  There is only one chromosome of each type in each body cell. 
B)  Chromosomes contain both DNA and associated histones. 
C)  Chromosomes condense from chromatin at the start of mitosis. 
D)  Chromosomes disperse back into chromatin at the end of mitosis. 
E)  Chromosomes are not located within the nuclear envelope during mitosis.

Question 9

Binary fission in bacteria differs from mitosis because

Accepted Answer

A)  the chromosome copies attach to the plasma membrane and are pulled apart by cell growth. 
B)  the chromosome is a simple DNA strand without complex proteins and no spindle forms. 
C)  there is no nuclear membrane to break down and rebuild. 
D)  All of the choices are correct. 
E)  None of the choices are correct. 
A)  the chromosome copies attach to the plasma membrane and are pulled apart by cell growth. 
B)  the chromosome is a simple DNA strand without complex proteins and no spindle forms. 
C)  there is no nuclear membrane to break down and rebuild. 
D)  All of the choices are correct. 
E)  None of the choices are correct.

Question 10

The diploid (2n) number of chromosomes for a human being is

Accepted Answer

A)  23. 
B)  24. 
C)  44. 
D)  46. 
E)  48. 
A)  23. 
B)  24. 
C)  44. 
D)  46. 
E)  48.

Question 11

What structure will code for the proteins that will promote the normal cell cycle and prevent apoptosis?

Accepted Answer

A)  tumor suppressor genes 
B)  oncogenes 
C)  caspases 
D)  proto-oncogenes 
A)  tumor suppressor genes 
B)  oncogenes 
C)  caspases 
D)  proto-oncogenes

Question 12

What factors are evaluated before a cell is allowed to proceed through the G1 checkpoint?

Accepted Answer

A)  growth signals 
B)  availability of nutrients 
C)  the integrity of cellular DNA 
D)  all of these 
E)  none of these 
A)  growth signals 
B)  availability of nutrients 
C)  the integrity of cellular DNA 
D)  all of these 
E)  none of these

Question 13

The critical checkpoints that control the cell cycle are the

Accepted Answer

A)  M to G1 stage and G2 to M stage. 
B)  S to G2 stage and G2 to M stage. 
C)  G1 to S stage and G2 to M stage. 
D)  M to G1 stage and S to G2 stage. 
A)  M to G1 stage and G2 to M stage. 
B)  S to G2 stage and G2 to M stage. 
C)  G1 to S stage and G2 to M stage. 
D)  M to G1 stage and S to G2 stage.

Question 14

What is (are) the structures designated by the letter 'A'?

Accepted Answer

A)  spindle fibers 
B)  centrioles 
C)  chromosomes 
D)  kinetochore microtubules 
A)  spindle fibers 
B)  centrioles 
C)  chromosomes 
D)  kinetochore microtubules

Question 15

Interphase:

Accepted Answer

A)  occupies the majority of the cell cycle 
B)  includes G1, S and G2 stages 
C)  results in an increase in cell size 
D)  All of the answer choices are correct. 
E)  None of the answer choices are correct. 
A)  occupies the majority of the cell cycle 
B)  includes G1, S and G2 stages 
C)  results in an increase in cell size 
D)  All of the answer choices are correct. 
E)  None of the answer choices are correct.

Question 16

Which statement below lists the correct steps for binary fission?

Accepted Answer

A)  1. attachment of chromosome to the plasma membrane, 2. enlargement of cell volume, 3. DNA replication occurs, 4. cell elongates and chromosomes are pulled apart, 5. a new cell wall and plasma membrane divide the cell in half 
B)  1. attachment of chromosome to the plasma membrane, 2. enlargement of cell volume, 3. DNA replication occurs, 4. a new cell wall and plasma membrane divide the cell in half, 5. cell elongates and chromosomes are pulled apart 
C)  1. a new cell wall and plasma membrane divide the cell in half, 2. attachment of chromosome to the plasma membrane, 3. enlargement of cell volume, 4. DNA replication occurs, 5. cell elongates and chromosomes are pulled apart 
D)  1. enlargement of cell volume, 2. attachment of chromosome to the plasma membrane, 3. DNA replication occurs, 4. cell elongates and chromosomes are pulled apart, 5. a new cell wall and plasma membrane divide the cell in half 
A)  1. attachment of chromosome to the plasma membrane, 2. enlargement of cell volume, 3. DNA replication occurs, 4. cell elongates and chromosomes are pulled apart, 5. a new cell wall and plasma membrane divide the cell in half 
B)  1. attachment of chromosome to the plasma membrane, 2. enlargement of cell volume, 3. DNA replication occurs, 4. a new cell wall and plasma membrane divide the cell in half, 5. cell elongates and chromosomes are pulled apart 
C)  1. a new cell wall and plasma membrane divide the cell in half, 2. attachment of chromosome to the plasma membrane, 3. enlargement of cell volume, 4. DNA replication occurs, 5. cell elongates and chromosomes are pulled apart 
D)  1. enlargement of cell volume, 2. attachment of chromosome to the plasma membrane, 3. DNA replication occurs, 4. cell elongates and chromosomes are pulled apart, 5. a new cell wall and plasma membrane divide the cell in half

Exam 9: The Cell Cycle and Cellular Reproduction

Cytokinesis in plant cells differs from this process in animal cells because

Which statement is NOT true about mitosis?

Generally, animals build an organism using the diploid number of chromosomes. However, insects in the order of ants, wasps and bees can use a haploid-diploid system where adults of one sex are formed with a haploid number of chromosomes. This would mean that

are only present in the cell immediately before apoptosis begins.

Apoptosis

Oncogenes are all of the following EXCEPT

Answer the following questions concerning the following figure. A. Name the structure labeled A. B. What process is occurring in the figure? C. Is this an animal or plant cell? Explain

Which statement is NOT true about eukaryotic chromosomes?

Binary fission in bacteria differs from mitosis because

The diploid (2n) number of chromosomes for a human being is

What structure will code for the proteins that will promote the normal cell cycle and prevent apoptosis?

What factors are evaluated before a cell is allowed to proceed through the G1 checkpoint?

The critical checkpoints that control the cell cycle are the

What is (are) the structures designated by the letter 'A'?

Interphase:

Which statement below lists the correct steps for binary fission?

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

What factors are evaluated before a cell is allowed to proceed through the G₁ checkpoint?