Question 1

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 theseF) A) and B)
G) B) and E)

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

Question 3

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.E) A) and D)
F) None of the above

Question 4

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

Accepted Answer

A)   spindle fibers
B)   centrioles
C)   chromosomes
D)   kinetochore microtubulesE) All of the above
F) C) and D)

Question 5

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 6

are only present in the cell immediately before apoptosis begins.

Accepted Answer

A) True 
 B)False

Question 7

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

Question 8

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

Accepted Answer

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

Question 9

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 halfE) B) and C)
F) None of the above

Question 10

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

Question 11

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

Question 12

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

Question 13

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.F) A) and B)
G) A) and C)

Question 14

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-oncogenesE) A) and C)
F) A) and B)

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.F) A) and B)
G) A) and C)

Question 16

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

Exam 9: The Cell Cycle and Cellular Reproduction

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

Correct Answer
verified

Oncogenes are all of the following EXCEPT

Correct Answer
verified

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

Correct Answer
verified

Interphase:

Correct Answer
verified

Binary fission in bacteria differs from mitosis because

Correct Answer
verified

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

Correct Answer
verified
A. 'A' is the cleavage furrow.
B. Cytoki...
View Answer

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

Correct Answer
verified

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

Correct Answer
verified

are only present in the cell immediately before apoptosis begins.

Correct Answer
verified

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

Correct Answer
verified

Which statement is NOT true about mitosis?

Correct Answer
verified

Apoptosis

Correct Answer
verified

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

Correct Answer
verified

The critical checkpoints that control the cell cycle are the

Correct Answer
verified

Which statement is NOT true about eukaryotic chromosomes?

Correct Answer
verified

Which statement below lists the correct steps for binary fission?

Correct Answer
verified

Exam 9: The Cell Cycle and Cellular Reproduction

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

Correct AnswerverifiedShow Answer

Oncogenes are all of the following EXCEPT

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Interphase:

Correct AnswerverifiedShow Answer

Binary fission in bacteria differs from mitosis because

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedA. 'A' is the cleavage furrow.B. Cytoki...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

are only present in the cell immediately before apoptosis begins.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which statement is NOT true about mitosis?

Correct AnswerverifiedShow Answer

Apoptosis

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The critical checkpoints that control the cell cycle are the

Correct AnswerverifiedShow Answer

Which statement is NOT true about eukaryotic chromosomes?

Correct AnswerverifiedShow Answer

Which statement below lists the correct steps for binary fission?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A. 'A' is the cleavage furrow.
B. Cytoki...
View Answer

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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