Biology · BIOMOLECULES

During elemental analysis of living tissue, when a tissue sample is completely burnt, which of the following constituents escape in the gaseous form, and which are retained in the 'ash'?

Water evaporates leaving behind only nitrogenous bases and polysaccharides in the ash.
Inorganic elements are volatilized as oxides, while all organic carbon compounds remain behind in the ash.
Sulphate and phosphate ions evaporate completely, leaving behind pure elemental carbon in the ash.
Carbon compounds are oxidized to CO2 and water vapour, while inorganic elements like calcium and magnesium remain in the ash.

Correct answer · Option 4

Carbon compounds are oxidized to CO2 and water vapour, while inorganic elements like calcium and magnesium remain in the ash.

Explanation

When living tissue is fully burnt, all carbon compounds are oxidised to gaseous form (CO2 and water vapour) and removed; the remaining ash contains inorganic elements like calcium and magnesium, as well as inorganic compounds like sulphate and phosphate.

During elemental analysis of living tissue, when a tissue sample is completely burnt, which of the following constituents escape in the gaseous form, and which are retained in the 'ash'?

Correct answer · Option 4

Explanation

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During elemental analysis of living tissue, when a tissue sample is completely burnt, which of the following constituents escape in the gaseous form, and which are retained in the 'ash'?

Correct answer · Option 4

Explanation

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