Cell Cycle and Cancer

As humans grow, their bodies increase in size. Which of these statements explains how humans grow?

• Cells form a cell wall that expands with time.

• Cells increase in size as a person ages.

• Cells undergo cell division producing new cells.

• Cells merge together to becomes larger.

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Which statement is true about normal mitotic cell division?

• Each daughter cell produced has only one-fourth the number of chromosomes of the parent cell.

• Each daughter cell produced has only one-half the number of chromosomes as the parent cell.

• Each daughter cell produced has twice the number of chromosomes as the parent cell.

• Each daughter cell produced has the same number of chromosomes as the parent cell.

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Use the illustration below to answer the question.

Which statement best describes the phase of the cell cycle shown?

• The cell is in prophase of mitosis because the number of chromosomes has doubled.

• The cell is in metaphase of mitosis because the number of chromosomes has doubled.

• The cell is in telophase of mitosis because the cell is separating and contains two copies of each chromosome.

• The cell is in interphase of mitosis because the cell is separating and contains two copies of each chromosome.

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The list below states several process that occur throughout the cell cycle.

I.nuclear duplication

II.cytoplasmic division

III.DNA replication

IV.cellular growth

Which processes are involved in mitotic cell division?

• II, III, and IV

• I and III only

• I and II only

• I, II, and III

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Which is a characteristic of the group of diseases known as cancer?

• uncontrolled cell division.

• the formation of only monoploid cells.

• meiotic cell division in body cells.

• the rapid formation of zygotes.

Cancer often results from a mutation in the genes that control the -

• stages of mitosis.

• events in the cell cycle

• growth of some new cells

• timing of cytokinesis

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Cancers may involve the formation of tumors that can be classified as either benign or malignant as described in the table below.

benign tumor-does not invade its surrounding tissue or spread around the body.

malignant tumor-may invade its surrounding tissue or spread around the body.

However, regardless the classification of the tumor produced, cancer involves -

• cells that cover internal body parts only.

• cell transport processes being disrupted.

• unregulated phased in the cell cycle.

• enzymes functioning below optimal capacity.

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What is the result of the cell cycle? (somatic=body cell)

• Two genetically identical somatic daughter cells

• Four genetically unique somatic daughter cells

• Two genetically unique somatic daughter cells

• Four genetically identical somatic daughter cells

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What is this phase of Mitosis?

• Prophase

• Metaphase

• Anaphase

• Telophase

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Which is used to repair or replace a cell?

• mitosis

• meiosis

• replication

• transcription

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