THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cells are created by free-cell formation.
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Cells generate more cells during cell division.
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Existing cells are produced by other living cells.
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Cells communicate with each other and produced special chemical messengers to repair tissue.
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Detailed explanation-1: -A scar usually replaced the tissue that becomes damaged in the human body. The liver is a unique organ because it is able to regenerate tissue if it becomes damaged. Which principle from the cell theory supports this finding? Cells are created by free-cell formation.
Detailed explanation-2: -When cells become damaged or die the body makes new cells to replace them. This process is called cell division.
Detailed explanation-3: -Whether the healing of a wound proceeds down the regeneration or the replacement pathway (or both) depends, in part, on the type of tissue in which it occurs. Certain tissues of the body are more capable of cellular proliferation (and hence regeneration) than others.
Detailed explanation-4: -Repair after injury can occur by regeneration of cells or tissues that restores normal tissue structure, or by healing, which leads to the formation of a scar. In case of regeneration, the damaged or lost tissue is replaced by the proliferation of surrounding undamaged cells and tissue.
Detailed explanation-5: -As debris from damaged tissues is removed, the inflammatory phase gradually subsides and the tissue begins to repair and rebuild itself. New blood vessels grow into the area to deliver repair “supplies” and remove waste. Scar tissue begins to form.