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CB098-008.41_Roots - Workforce Solutions
CB098-008.41_Roots - Workforce Solutions

... Mycorrhiza (plural, mycorrhizae) – a symbiotic association between a fungus and a root of a plant. These are short, forked root structures common to as many as 90% of seed plants. This relationship makes roots more efficient in mineral absorption. Fungi receive housing and carbohydrates from the pla ...
Bio 226: Cell and Molecular Biology
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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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