THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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I only
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II only
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III only
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I and III
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Detailed explanation-1: -The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life come from preexisting life. The cell theory is so established today that it forms one of the unifying principles of biology.
Detailed explanation-2: -All living cells must have a cell wall. All living cells require glucose for survival. The basic unit of life is a cell.
Detailed explanation-3: -The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. Rudolf Virchow later made important contributions to this theory.
Detailed explanation-4: -Explanation: Matthias Schleiden and Theodore Schwann together formulated the cell theory. It states that living things are composed cells, that the cell is the basic unit of life, and that new cells arise from existing cells.