BIOB10H3 Lecture Notes - Lecture 1: Antonie Van Leeuwenhoek, Matthias Jakob Schleiden, Rudolf Virchow
Document Summary
Study cells at the microscopic and molecular level (in biob10 emphasis in eukaryotic cells) Matthias schleiden (1838), theodor schwann (1839), & rudolf virchow (1855) 2. ) possess a genetic program & mean to use it. *louis pasteur was among the 1st to dispute the notion that life arises spontaeneously. All organisms are composed of one or more cells. The cell is the structural unit of life. Cells can arise only by division from a preexisting cell. : dna repair enzymes, determine when they should stop or start dividing. >use cell surface proteins for this = receptors. >genetic changes tat lead to cellular changes that are beneficial, are retained in future generations. 2. ) structurally more complex: internal organelles; complex cytoskeletal system. 3. ) more dna than prokaryotes: typically, several chromosomes composed of single linear. Less dna than eukaryotes: typically single circular chromosome. >genetic code is identical: info encoded in dna. >shared metabolic pathways: such as synthesis of atp.
