STAAR Biology Cells

Cell Cycle and Cancer

Biology STAAR Review

I am learning about the cell cycle and cancer.

​​Learning Goal:

1. I can explain the importance of the cell cycle.

2. I can relate disruptions of the cell cycle to how they lead to the development of cancer.

​​Success Criteria

6A: explain the importance of the cell cycle to the growth of organisms including an overview of the stages of the cell cycle and DNA replication models.

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Cell Cycle

Labelling

Label the following cell cycle diagram.

Drag labels to their correct position on the image

Mitosis

Interphase

Cytokinesis

Telophase

S, DNA Replication

Anaphase

Metaphase

G1, cell growth

Prophase

G2, cell prepares to divide

Reorder

Put the following mitosis pictures in the correct order.

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

Scientists have reported that more than 95% of the factors that lead to some types of cancers are caused by random DNA-copying errors. During which phase of the cell cycle do these DNA-copying errors most likely occur?

• S phase

• G1 phase

• G2 phase

• M phase

Hotspot

Dogs have 39 pairs of chromosomes in their somatic cells. In which part of the cell are these chromosomes replicated during the cell cycle? Select ONE correct answer.

6C: relate disruptions of the cell cycle to how they lead to the development of diseases such as cancer.

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Cell Cycle & Cancer

Multiple Choice

Which of these properties is found only in cancer cells?

• Unregulated cell division

• Regulated gene expression

• Response to signals outside of the cell

• Presence of mitochondria

Multiple Choice

Normal cells have a contact inhibition feedback mechanism that prevents the cells from replicating when other cells are touched. A diagram of cells with contact inhibition and cells without contact inhibition is shown. Which statement best describes what will happen to cells in an organism that lack contact inhibition?

• The cells will continue to grow, causing a tumor in the body.

• The cells will replicate normally, replacing body cells that die.

• The cells will replicate until the food supply for each cell is used, causing each cell to die.

• The cells will stop replicating once one layer is produced, as other body cells will crowd them out.