Question

What is Cell Theory?
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Answer 1

Answer:

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. ... The cell is the fundamental unit of structure and function in living things

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Answer 2

Answer:

In 1838, Matthias Schleiden, a German Botanist, announced that every plant is made up of a large number of cells. He added that each of these cells performed various life processes. A year later, Theodor Schwann, a German zoologist, made similar discoveries in animals. He declared that all animals ans plants are composed of cells, which serve as the units of structure and function. This in sorry is called the Cell Theory, having been proposed by Schwann and Schleiden in the year 1839.

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