A Proto-Oncogene Differs from a Tumor Suppressor Gene Because a Proto-Oncogene

question 7

Multiple Choice

A proto-oncogene differs from a tumor suppressor gene because a proto-oncogene

• A) may cause cancer if mutated, whereas a tumor suppressor gene cannot.
• B) stimulates mitosis in a normal cell, whereas a tumor suppressor gene inhibits mitosis.
• C) only activates enzymes in a cell that allows metastasis.
• D) inhibits the cell cycle, whereas a tumor suppressor accelerates the cell cycle.
• E) promotes meiosis, whereas a tumor suppressor gene promotes mitosis.

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