THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As cells become more numerous, they begin to squeeze against each other, restricting their size and ability to produce control factors.
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As cells become more numerous, the cell surface proteins of one cell contact the adjoining cells and they stop dividing.
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Detailed explanation-1: -Answer and Explanation: The correct answer is (e) As cells become more numerous, they begin to squeeze against each other, restricting their size and ability to produce control factors. Density-dependent inhibition results from the restrictions of physical cell density.
Detailed explanation-2: -When cells have formed a complete single layer, they stop dividing (density-dependent inhibition). If some cells are scraped away, the remaining cells divide to fill the gap and then stop (density-dependent inhibition).
Detailed explanation-3: -Density-dependent inhibition is explained by which of the following? As cells become more numerous, the cell surface proteins of one cell contact the adjoining cells and they stop dividing.
Detailed explanation-4: -Density-dependent inhibition. Normal cells proliferate in culture until they reach a finite cell density, at which point they become quiescent. Tumor cells, however, continue to proliferate independent of cell density.
Detailed explanation-5: -Which of the following is a protein maintained at constant levels throughout the cell cycle that requires cyclin to become catalytically active? cyclins.