Question 1

Why is mitosis also referred to as karyokinesis?

Accepted Answer

The nucleus is also referred t...

Question 2

During which phase of the cell cycle is DNA synthesized?

Accepted Answer

A)  G1
B)  G2
C)  S
D)  Prophase
E)  MetaphaseF) C) and E)
G) B) and E)

Question 3

After duplication,sister chromatids remain joined together:

Accepted Answer

A)  until metaphase
B)  by the centromere
C)  throughout mitosis
D)  until telophase
E)  by the kinetochoreF) A) and E)
G) B) and C)

Question 4

When the chromosomes line up at the equatorial plane,you can conclude the cell is in:

Accepted Answer

A)  anaphase
B)  metaphase
C)  prophase
D)  telophase
E)  interphaseF) A) and C)
G) B) and E)

Question 5

Which of the following is not a stage of mitosis?

Accepted Answer

A)  Interphase
B)  Prophase
C)  Anaphase
D)  Metaphase
E)  TelophaseF) None of the above
G) C) and E) A

Question 6

Mutations disabling key elements of the G1 checkpoint are associated with many cancers.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following does not occur during telophase?

Accepted Answer

A)  the nuclear membrane disappears
B)  the nucleolus reappears
C)  chromosomes uncoil
D)  the spindle is disassembled
E)  cytokinesis often begins nowF) C) and D)
G) A) and B)

Question 8

All of the following are correct about cancer except:

Accepted Answer

A)  malignant tumors are invasive
B)  malignant tumors are not encapsulated
C)  cancer cells can sometimes spread into the bloodstream
D)  benign cells are those that have metastasized
E)  cancers are the direct result of mutations in growth-regulating genesF) A) and B)
G) A) and C) D

Question 9

What is the goal of angiogenesis inhibitors?

Accepted Answer

A)  They inhibit the formation of small blood vessels that feed a tumor.
B)  They prevent the activation of protein kinases in the cell.
C)  They target the Ras protein,causing it to stop promoting cell division.
D)  They inhibit the synthesis of HER1 proteins on cancerous cells.
E)  All of the choices are correct.F) B) and C)
G) B) and D)

Question 10

Genes known as _________ encode proteins that stimulate cell division.

Accepted Answer

proto-oncogenes

Question 11

The G1,S,and G2 phases of the cell cycle are collectively known as:

Accepted Answer

A)  interphase
B)  prophase
C)  mitosis
D)  meiosis
E)  metaphaseF) B) and D)
G) B) and C)

Question 12

Which is not correct about the way prokaryotes divide?

Accepted Answer

A)  They divide by binary fission.
B)  The chromosome is a single circular molecule of DNA.
C)  The replication of DNA occurs in one direction around the circle.
D)  They use the same DNA bases as in eukaryotes.
E)  When the cell reaches an appropriate size,the cell divides into two equal halves.F) A) and B)
G) A) and C)

Question 13

Cytoplasm is cleaved in two during the _____________________ phase of the cell's life cycle.

Accepted Answer

C phase or...

Question 14

What is telomerase?

Accepted Answer

A)  A protein found in abundance on colon cancer cells
B)  An enzyme that inhibits the formation of small blood vessels that feed a tumor
C)  An enzyme that adds bases back to the tip of chromosomes every time a cell divides
D)  A chemical that allows the telophase stage of mitosis to proceed
E)  A chemical involved in RNA synthesisF) A) and B)
G) A) and C)

Question 15

A ______________ is a long DNA molecule that contains genes and has proteins to help it retain its shape.

Accepted Answer

The answer of A ______________ is a long DNA molecule...

Question 16

During which stage of the cell cycle does the M checkpoint occur?

Accepted Answer

A)  Metaphase
B)  Prophase
C)  Telophase
D)  S phase
E)  G1F) C) and E)
G) A) and C)

Question 17

During which stage of the cell cycle does the mitotic spindle begin to form?

Accepted Answer

A)  S phase
B)  G1
C)  Telophase
D)  ProphaseE) A) and B)
F) A) and C)

Question 18

Most eukaryotes have between ___________ chromosomes in their body cells.

Accepted Answer

A)  1 and 15
B)  10 and 50
C)  100 and 200
D)  200 and 300
E)  350 and 500F) A) and D)
G) B) and D)

Question 19

Describe what occurs during prophase of mitosis.

Accepted Answer

Chromosomes condense,the nucle...

Question 20

During which stage of mitosis do replicated chromosomes condense and the nuclear envelope disappears?

Accepted Answer

A)  Interphase
B)  Prophase
C)  Telophase
D)  Metaphase
E)  AnaphaseF) A) and B)
G) A) and C)

Exam 8: Mitosis

Why is mitosis also referred to as karyokinesis?

Correct AnswerverifiedThe nucleus is also referred t...View AnswerShow Answer

During which phase of the cell cycle is DNA synthesized?

Correct AnswerverifiedShow Answer

After duplication,sister chromatids remain joined together:

Correct AnswerverifiedShow Answer

When the chromosomes line up at the equatorial plane,you can conclude the cell is in:

Correct AnswerverifiedShow Answer

Which of the following is not a stage of mitosis?

Correct AnswerverifiedA

Mutations disabling key elements of the G1 checkpoint are associated with many cancers.

Correct AnswerverifiedShow Answer

Which of the following does not occur during telophase?

Correct AnswerverifiedShow Answer

All of the following are correct about cancer except:

Correct AnswerverifiedD

What is the goal of angiogenesis inhibitors?

Correct AnswerverifiedShow Answer

Genes known as _________ encode proteins that stimulate cell division.

Correct Answerverifiedproto-oncogenes

The G1,S,and G2 phases of the cell cycle are collectively known as:

Correct AnswerverifiedShow Answer

Which is not correct about the way prokaryotes divide?

Correct AnswerverifiedShow Answer

Cytoplasm is cleaved in two during the _____________________ phase of the cell's life cycle.

Correct AnswerverifiedC phase or...View AnswerShow Answer

What is telomerase?

Correct AnswerverifiedShow Answer

A ______________ is a long DNA molecule that contains genes and has proteins to help it retain its shape.

Correct AnswerverifiedShow Answer

During which stage of the cell cycle does the M checkpoint occur?

Correct AnswerverifiedShow Answer

During which stage of the cell cycle does the mitotic spindle begin to form?

Correct AnswerverifiedShow Answer

Most eukaryotes have between ___________ chromosomes in their body cells.

Correct AnswerverifiedShow Answer

Describe what occurs during prophase of mitosis.

Correct AnswerverifiedChromosomes condense,the nucle...View AnswerShow Answer

During which stage of mitosis do replicated chromosomes condense and the nuclear envelope disappears?

Correct AnswerverifiedShow Answer

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The nucleus is also referred t...
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A

Mutations disabling key elements of the G₁ checkpoint are associated with many cancers.

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D

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proto-oncogenes

The G₁,S,and G₂ phases of the cell cycle are collectively known as:

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C phase or...
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Chromosomes condense,the nucle...
View Answer

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