BIOL 2041 Lecture Notes - Lecture 4: Peptidoglycan, Mycobacterium Leprae, Gram-Negative Bacteria
Document Summary
Chapter 4 prokaryotic and eukaryotic cells: structure and function. Prokaryotic cells have some organelles which are different from eukaryotic organelles; Bacteria and archaea are prokaryotic cells; all other organisms are made of eukaryotic cells. The dna in a prokaryotic cell occupies an irregularly shaped region (nucleoid); the dna of a. All organisms except viruses are cellular; there are 2 types of cells: prokaryotic and eukaryotic. Prokaryotic cells have a grainy but uniform interior; eukaryotic cells contain many internal membranes/ membrane-bound structures (organelles). prokaryotic organelles are not bounded by lipid membranes. eukaryotic cell is located in a well-defined, membrane-bound nucleus. All prokaryotic cells (except some archaea) have a cell wall made of peptidoglycan (part polysaccharide and part protein); no eukaryotic cell contains peptidoglycan. Most prokaryotes are <1 um-several um across (the size of eukaryotic organelles); whole eukaryotes are. Small cells have a higher surface-to-volume ratio (more surface area for the same volume) than.
