In Certain Cancerous Cells, the Cell Divides Continuously Even in the Absence

question 33

Multiple Choice

In certain cancerous cells, the cell divides continuously even in the absence of a growth factor (signaling molecule) that indicates the cell should divide. Which of the following could explain this?

• A) a receptor molecule that is always turned on
• B) a receptor molecule that is always turned off
• C) a transduction pathway that is always turned off
• D) a target protein that is always deactivated
• E) a gene for cell division that is not expressed when it should be

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Definitions:

Identical Products

Products that are exactly the same in every feature, often used in economic models of perfect competition.

Collusively

Acting in coordination with others, often in secret, to limit competition and manipulate market outcomes, such as setting prices.

Product Demand

The desire and willingness of consumers to purchase a particular good or service at a given price.

Oligopoly

A market structure characterized by a few firms dominating the industry, leading to limited competition and potentially higher prices for consumers.