BIOL 2051 : Microbiology Study Guide Exam 4
Document Summary
Macronutrients (needed in large amounts): carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur, potassium, magnesium, calcium, sodium. Growth factors (organic compounds needed in small amounts) Not required, growth no better with or without it present. H2o2 + e- + h+ h2o +oh* Hydrogen peroxide can form antiseptic; discourages life. Not binary fission: (polar growth) simple budding; budding from hyphae; cell division of stalked organism; polar growth without differentiation of cell size. Rock: dna synthesis is initiated, the stalk elongates from the other end (the end that is still attached to the, cell loses flagella, hyphae on mother cell lengthens even more (?) Cell division in stalked bacteria: (caulobacter) again) attached to surface. The growth cycle: lag phase, exponential phase, stationary phase, death phase. N0 = initial number of cells n = number of generations. *the order of events doesn"t change, but the time they take to occur does.
