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Biology · 2026 · 2 marks
Biotechnology : Principles and ProcessesProcesses of Recombinant DNA Technology2 marksApplyvery short answer
CBSE 2026 · Region 2 · Set 2 · Q18
Briefly describe the process of DNA extraction from a fungal cell. Name the chemicals used in the process.
Briefly describe the process of DNA extraction from a fungal cell. Name the chemicals used in the process.
Marking-scheme solution
Fungal cell is treated with Chitinase enzyme to digest the membrane.
RNA is removed by treating with Ribonuclease.
Proteins removed by treating with protease.
Chilled ethanol is then added and purified DNA precipitates out.
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CBSE Class 12 Biology past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.