9.4 and 9.5 Cancer Cells and Tumor Supressors

When is apoptosis initiated?

• When DNA damage is repaired.

• When cells are removed from the cell cycle.

• When DNA damage cannot be repaired.

Uncontrolled cell division is stopped by...

• tumor suppressor genes

• oncogenes

Which is an example of a tumor suppressor gene?

• apoptosis
• proto-oncogenes
• p53
• oncogenes

Proto-oncogenes can mutate into...

• oncogenes
• tumor suppressor genes
• DNA repair proteins

Which of the following statements is true?

• Proto-oncogenes cause a loss of control of the cell cycle
• the products of oncogenes may inhibit the cell cycle
• tumor-suppressor-gene products inhibit the cell cycle
• a mutation in a proto-oncogene may convert it into a tumor suppresor gene

What is cancer?

• The heart does not receive enough blood.
• Sudden disruption of blood flow to part of the brain.
• Blood filled weak spot.
• Uncontrolled growth and spread of abnormal cells.

Cancer is a consequence of the disruption of the cell cycle

• True
• False

When cancer spreads to other tissues of the body, it is called...

• Metastasis
• Invasiveness
• Angiogenesis
• Chemotherapy

Protein kinases activate other relay proteins by adding a(n) ____ to them.

• phosphate
• ATP molecule
• cAMP
• GTP

Bacteria reproduce asexually by a process called

• replication

• meiosis

• mitosis

• binary fission