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Introduction to Minerals
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Introduction to Minerals
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8. Water and Minerals / Introduction to Minerals / Problema 7
Problema 7
Low magnesium disrupts many enzyme systems. Which type of enzyme-dependent process is most likely to be impaired by low intracellular magnesium?
A
ATP-dependent kinases and other enzymes that require Mg2+ as a cofactor to stabilize ATP and facilitate phosphoryl transfer.
B
The polymerization of DNA into chromosomes during mitosis, because magnesium is the main structural component of chromatin compaction and histone assembly.
C
Vitamin C biosynthesis in humans, since humans synthesize vitamin C in large quantities and require magnesium directly for the hydroxylation steps of its production.
D
Lipase-mediated fat digestion in the intestinal lumen that depends exclusively on free fatty acids and bile salts without requiring metal cofactors.
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