All living organisms are composed of cells and products of cells.
Which of the following statements regarding the fundamental nature of cells and cell theory are NOT correct? S1: Antonie Von Leeuwenhoek first saw and described a live cell, demonstrating that unicellular organisms are capable of independent existence. S2: Robert Brown is credited with the discovery of the nucleus within a cell in 1831. S3: Theodore Schwann's studies on plant tissues led him to conclude that the presence of cell wall is a unique character of animal cells. S4: The cell theory, initially proposed by Schleiden and Schwann, did not address the mechanism of how new cells are formed. S5: Rudolf Virchow's contribution, "Omnis cellula-e cellula," implies that all living organisms are composed of cells and products of cells.
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