METABOLISM.docx - METABOLISM how cells get/use energy= is...

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METABOLISM how cells get/use energy= is accounted in its growth Outcome of metabolism is growth representing diff. things Growth = increased biomass (increase in biological stuff/materials in there ) OR population growth (# of cells) implies there is population growth/reproduction >In referring to growth, important to consider nutrient sources (what cell can obtain/ under what conditions) & how growth is measured 2 things needed ; CARBON & ENERGY SOURCE; source of carbon to increase organic stuff already there & how they get their energy -can base them off how they get their energy; get carbon either from inorganic (CO2) or organic source (carbon; containing, hydrogen+carbon+…) *inorganic substances are autotrophs & organic are heterotrophs (getting from material already there) For energy source we get it either from sunlight (photo-) or chemicals
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Unformatted text preview: (chemo-) organisms need both of these sources but can be… (carbon source +energy source) Chemoautotrophs: energy source from light, Chemoheterotrophs: Photoautotrophs: Photoheterotrophs: (eukayotes; photohetero/autotroph or chemoheterotroph) Let’s talk nutrients… Water take about 75-90 percent of cells mass everything else made of Carbon, Oxygen, Hydrogen, Sodium, Sulfur and Phosphate **principle components of cell mass so= MACRO nutrients **micronutrients represent other elements in small amounts & imp. that we know there is a narrow window between too little & too much and micronutrients become toxic; Calcium, Cobalt, Copper, Iron etc. Optimum growth range; hyperthermophiles are in arachea domain...
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