BIOL 2004 Lecture Notes - Lecture 14: Denitrification, Pyruvic Acid, Phosphorylation
Document Summary
Grwoth and reproduction: typically, cells grow, then divide evenly in two (binary fission, division includes . Formation of septum (septation): at z ring". The growth curve (in batch culture: log phase: period of exponential growth, ended by nutrient limitation, or toxic buildup: cultyre enters. Stationary phase": lag phase log phase stationary phase death phase. Differentiation: different cell types in a few colonial forms. Heterocysts in some cyanobacteria: more common: alternate cell forms specialised for dormancy and/or dispersal. Make sure you know the distinction between: organic & inorganic molecules. Has carbon-carbon bonds: catabolism (breaking down) + anabolism (building up) Basic nutritional types of organisms: photoautotrophs, chemoautotrophs, photoheterotrophs, chemoheterotrophs. Two types of chemotrophs: most chemoheterotrophs are: organotrophs. Catabolism of organic molecules: chemoautotrophs are: lithotrophs (litho=rock) An organism"s relationship with oxygen: aerobes (can use oxygen as electron acceptor) Facultative aerobes (use o2, but don"t require it for growth: microaerophiles (prefer low levels of o2, anaerobes (no use of oxygen)
