BIOL 101 Lecture Notes - Lecture 2: Antonie Van Leeuwenhoek, Matthias Jakob Schleiden, Rudolf Virchow
Document Summary
Chapter 4: cells - the basic unit of life. Cells as life"s fundamental unit: every form of life on earth either is a cell or is composed of many cells. Prokaryote = before nucleus: pro= before, karyon = nucleus. Cell theory: a foundation of biology: all living organisms are composed of 1+ cells, cell is basic unit of structure, function, organization in all organisms, all cells come from pre-existing cells. Eggs are cells you can see without a microscope. 1665 = robert hooke = first to call spaces in cork cells. 1680s = anton van leeuwenhoek = observed living cells through a simple microscope. 1838 = matthias schleiden = discovered plants are made of cells. 1839 = theodor schwann = discovered that animals are made of cells. 1855 = rudolph virchow = stated living cells come from other living cells. Dna, plasma membrane, capsule, cell wall, ribosomes, cytoplasm, bacterial flagellum. Only one type of organelle - ribosomes.
