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

Question 54

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 NOT explain this?


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

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