Cell Division and Cancer Review

Normal cells and cancer cells differ in several ways. This illustration shows some examples of visible changes in cancer cells. Which of these accurately describes a difference between cancer cells and normal cells?

• Cancer cells divide less frequently
• Cancer cells lack the ordered structure of normal cells
• Cancer cells have a consisent size/ shape
• Cancer cell nuclei are always small and rounded in shape

A physician takes a biopsy, or tissue sample, from the skin of a patient. Which observation of the cells in the tissue would most strongly support the conclusion that the patient has skin cancer?

• Many of the cells appear identical to each other
• All cells are packed closely together
• Some of the skin cells were dead when the biopsy was obtained
• All of the above

How does apoptosis relate to cancer cells?

• In cancer cells, too much apoptosis occurs, resulting in malignant cells will not undergo programmed cell death
• In cancer cells, apoptosis does not occur, resulting in malignant cells will not undergo programmed cell death
• In cancer cells, apoptosis occurs only when cells grow without proper regulation
• In cancer cells, apotosis occurs to all cells regardless of signaling

Cells go through periods of growth and division. Cell division occurs during the ______________ phase of the cell cycle

• mitotic
• G1
• G2
• S
• All of the above

What is shown by the following?

• Cell Differentiation
• Mitosis
• Necrosis
• Interphase

How many checkpoints does the cell cycle have?

• None
• 1
• 3
• Thousands

In general, what is the purpose of a checkpoint in the cell cycle?

• Promote cancerous growth
• Progression of a cell to the next stage in the cell cycle can be halted until conditions are favorable
• Kill all cells
• Promote cell differentiation

Genetic information is bundled into packages of __________ known as _______________

• DNA, Chromosomes
• Centrioles, DNA
• Chromosomes, DNA
• RNA, Chromosomes

Approximately ________ % of the cell's life cycle is spent in interphase, and _______ % of the cell's time is spent dividing (going through mitosis)

• 90, 10
• 50,50
• 60,40
• 99,1
• 10,90

What happens to the chromosomes during prophase?

• They condense and start to form
• They line up in the middle of the cell
• They split apart into chromatids and move to opposite sides of the cell
• They are destroyed