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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Variable Cost

Costs that change in proportion to the level of activity or volume of production.

Break-Even Point

The level of production or sales at which total costs equal total revenue, resulting in no net profit or loss.

Fixed Costs

Costs that remain constant in total regardless of changes in the level of production or sales volume.

Unit Selling Price

The amount of money charged for one unit of a product or service, often determining revenue and profitability.