Statement I: An alloy of lithium and magnesium is used to make aircraft plates.\ Statement II: The

Question

Statement I: An alloy of lithium and magnesium is used to make aircraft plates.\ Statement II: The magnesium ions are important for cell-membrane integrity.

Professor PC Thomas Classes · Answer

Li-Al is used for aircraft parts, Li-Mg for armour plates. Mg ions activate enzymes, while Ca ions are key for membrane integrity. Wait, actually Mg helps maintain membrane integrity in some contexts too, but Li-Mg is for armour. The given key makes Statement I false and II true.