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glucose, faKy acids, amino acids
glucose, faKy acids, amino acids

... -­‐ the  breaking  down  of  organic  macromolecules   (glucose,  fa8y  acids,  amino  acids,  etc.)  in  the   presence  of  oxygen  to  produce  ATP  (occurs  in   mitochondria)   (glucose) ...
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...  Stomata closed during the light, open at night CAM metabolism: CO2 is fixed during the night, water loss in the day is minimized.  CAM plants, American aloe, pineapple, Kalanchoe, Yucca  When the weather is hot and dry, keeps its stomata closed most of the time, conserving water. At the same ti ...
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Magnesium in biology



Magnesium is an essential element in biological systems. Magnesium occurs typically as the Mg2+ ion. It is an essential mineral nutrient (i.e., element) for life and is present in every cell type in every organism. For example, ATP (adenosine triphosphate), the main source of energy in cells, must be bound to a magnesium ion in order to be biologically active. What is called ATP is often actually Mg-ATP. As such, magnesium plays a role in the stability of all polyphosphate compounds in the cells, including those associated with the synthesis of DNA and RNA.Over 300 enzymes require the presence of magnesium ions for their catalytic action, including all enzymes utilizing or synthesizing ATP, or those that use other nucleotides to synthesize DNA and RNA.In plants, magnesium is necessary for synthesis of chlorophyll and photosynthesis.
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