Moderate
Product of microorganism that appears to chelate calcium is called_____________________?
Correct answer: B. 2-ketoghconic acid
- A. Pyruive acid
- B. 2-ketoghconic acid
- C. Carbon dioxide
- D. Phospheric acid
Explanation
Microorganisms may produce 2-ketogluconic acid, an organic acid that chelates calcium and helps dissolve mineral compounds. The other listed substances do not specifically represent this calcium-chelating product.
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