MMG 301 Study Guide - Final Guide: Aerobic Organism, Psychrophile, Acidophile
16 Jul 2019
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The time required for a cell or population to double in number: classify microbes into groups based on temp, ph, osmotic pressure, and hydrostatic pressure, oxygen and co2 requirements. Mesophiles moderate-temperature-loving microbes; grows between 10 c and 50 c. Thermophiles heat-loving-microbes; optimum growth temperature is between 50 c and 60 c. Psychrophiles cold-loving microbes; grows best at about 15 c and does not after 20 c ph most bacteria grow best in a narrow ph range near neutrality, between ph 6. 5 and. Acidophiles a bacterium that grows below ph 4; tolerant of acidity. Osmotic pressure the force with which a solvent moves from a solution of lower solute concentration to higher solute concentration. Extreme halophiles organism that requires a high salt concentration for growth. Obligate halophiles organism that requires high osmotic pressure such as a high concentration of nacl. Facultative halophiles organism that do not require high salt concentration but are able to grow.
