Cells Grown in a Petri Dish Tend to Divide Until

question 35

Multiple Choice

Cells grown in a petri dish tend to divide until they form a thin layer covering the bottom of the dish. Which of the following statements explains why this occurs?

• A) The cells become deficient in cyclin.
• B) The petri dish inhibits the cells' growth.
• C) Cell division can be inhibited by the proximity of other cells of the same type, a process called contact inhibition.
• D) Most cells grown in petri dishes have gone through apoptosis.
• E) The cells have differentiated into more specialized cells.

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