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Rue-Micro week 3
Metabolism
Question | Answer |
---|---|
Aerobe | an organism requiring molecular oxygen (O2) for growth |
Anaerobe | an organism that does not require molecular oxygen (O2) for growth |
Anabolism | all synthesis reactions in a living organism; the building of complex organic molecules from simpler ones |
Catalyst | a substance that increases the rate of a chemical reaction but is not altered itself |
Calvin-Benson cycle | the fixation of CO2 into reduced organic compounds; used by autotrophs |
Co-factor | 1. the nonprotein component of an enzyme; and 2. A microorganism or molecule that acts with others to synergistically enhance or cause disease |
Conenzyme | a nonprotein substance that is associated with and that activates an enzyme |
Krebs cycle | a pathway that converts two-carbon compounds to CO2 transferring electrons to NAD1 and other carriers; also called tricarboxylic acid (TCA) cycle or critic acid cycle |
Enzyme | a molecule that catalyzes biochemical reactions in a living organism, usually a protein |
Acidophile | a bacterium that grows below pH 4. |
Budding | 1. Asexual reproduction beginning as a protuberance from the parent cell that grows to become a daughter cell, and 2. Release of an enveloped virus through the plasma membrane of an animal cell |
Agar | a complex polysaccharide derived from a marine alga and used as a solidifying agent in a culture media |
Culture | microorganisms that grow and multiple in a container of culture medium |
Death phase | the period of logarithmic decrease in a bacterial population; also called logarithmic decline phase |
Filtration | the passage of a liquid or gas through a screenlike material; a 0.45- µm filter removes most bacteria |
Generation time | the time required for a cell or population to double in number |
Lag phase | the time interval in a bacteria growth curve during which there is no growth |
Log phase | the period of bacterial growth or logarithmic increase in cell numbers; also called exponential growth phase |
Colony | a visible mass of microbial cells arising |