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From these conclusions about plants and animals, two of the three tenets of cell theory were postulated. 1. All living organisms are composed of one or more cells 2. The cell is the most basic unit of life. Schleiden's theory of free cell formation through crystallization was refuted in the 1850s by Robert Remak, Rudolf Virchow, and Albert ...
Components of a typical plant cell: a. Plasmodesmata b. Plasma membrane c. Cell wall 1. Chloroplast d. Thylakoid membrane e. Starch grain 2. Vacuole f. Vacuole g. Tonoplast h. Mitochondrion i. Peroxisome j. Cytoplasm k. Small membranous vesicles l. Rough endoplasmic reticulum 3. Nucleus m. Nuclear pore n. Nuclear envelope o. Nucleolus p ...
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English: Kandler's pre-cell theory (Kandler 1998, Figure 2.3, p.22) - Scheme of cellularisation (modified after Kandler 1994, p.155)ː Scenario of the early evolution and diversification of life through the development of a multiphenotypical population of pre-cells from which the founder groups (A, B, C) and then, from them, the precursor cells (proto-cells) of the three domains of life (Woese ...