THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cells form only from pre-existing cells
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bacteria can form in a sterile broth
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all cells can trace their ancestry back to ancient times
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cells are the building blocks of life
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Detailed explanation-1: -Credit for developing cell theory is usually given to three scientists: Theodor Schwann, Matthias Jakob Schleiden, and Rudolf Virchow. In 1839, Schwann and Schleiden suggested that cells were the basic unit of life. Their theory accepted the first two tenets of modern cell theory (see next section, below).
Detailed explanation-2: -Virchow’s greatest accomplishment was his observation that a whole organism does not get sick-only certain cells or groups of cells. In 1855, at the age of 34, he published his now famous aphorism “omnis cellula e cellula” (“every cell stems from another cell”).
Detailed explanation-3: -The ideas of all three scientists-Schwann, Schleiden, and Virchow-led to cell theory, which is one of the fundamental theories unifying all of biology. Cell theory states that: All organisms are made of one or more cells. All the life functions of organisms occur within cells.
Detailed explanation-4: -The Cell Theory was first given by M.J Schleiden and Theodor Schwann in 1839. It states that all the living beings whether plants or animals are composed of cells that are from pre-existing cells. However, they failed to explain how new cells are formed.