GROWTH DEVELOPMENT CHILD
GROWTH AND DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they divide more quickly
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they stop growing
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they produce cyclins
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they produce p53
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Detailed explanation-1: -When cells come in contact with other cells, they usually stop their growth. This indicates that cells have the ability to continue or stop their growth. A similar thing happens when a skin is cut. The cells that are located along the edges of the injury are dividing and producing new cells rapidly.
Detailed explanation-2: -Normal cells “stop growing” when they come into contact with other cells. Proteins called “cyclins” help regulate the cell cycle. “Cancer” is a disorder in which some of the body’s cells lose the ability to control growth and division. Lack of control over “mitosis” is the cause of all cancers.
Detailed explanation-3: -When a cell comes into contact with another cell, the two cells attempt to change their locomotion in different directions to avoid a repeat of the same in the future. If they cannot avoid it, they cease their growth and division.
Detailed explanation-4: -If the cell is not grown in the interphase, cells cannot synthesize proteins needed for mitosis. So the process of mitosis cannot be carried in the cells.
Detailed explanation-5: -Senescence-in which cells stop growing and dividing-results from serious stress and genetic damage, says study coauthor Stephen Elledge, a geneticist at Harvard Medical School.