BIO 1140 Lecture Notes - Lecture 1: Matthias Jakob Schleiden, Mitochondrial Matrix, Vacuole
26 Mar 2015
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Eukaryotes: model organisms of each group 5. 20] (cid:120) (cid:120) viruses, viroids and prions [ch. Eukaryotic diversity protists, fungi, plants and animals [scan ch. 2. 2-2. 4] see also below the origin and evolution of cells section titled eukaryotic cells (cid:120) (cid:120) The fundamental unit of life, and every organism consists of cells or is itself a single cell. (cid:120) (cid:120) defining characteristics: All organisms consist of one or more cells. The cell is the basic unit of structure for all organisms (theodor schwann,1839 (matthias schleiden, 1838) All cells arise only from pre-existing cells (i. e. the cell is the basic unit of reproduction) (rudolf virchow, 1855) The cell has enormous diversity: form, function and size. Simple to complex shape: usually very small but can be large too (ostrich egg, cells can vary in size from microscopic to up to 1m long ( giraffe skeletal neurons) Size matters: units relevant to cell biology.
