NEET 2023 MCQ | Why Do We Add Chilled Ethanol in DNA Extraction? 🧬 | Biotech Explained
Автор: NEET FLEXX
Загружено: 2025-08-02
Просмотров: 103
Описание:
🧬 NEET 2025 Biology | Ethanol Precipitation in DNA Purification – rDNA Technology MCQ
📚 Q: During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out:
(1) RNA
(2) DNA
(3) Histones
(4) Polysaccharides
This NEET 2025 Biology MCQ focuses on biotechnological techniques, especially the purification step during recombinant DNA processing. Learn what component is isolated using chilled ethanol during the extraction procedure.
✅ Topic: Biotechnology – Principles and Processes
✅ Question Format: NEET-style MCQ
✅ Perfect for: NEET 2025 aspirants, Class 12 Biotech revision
💡 Correct Answer: (2) DNA
🧪 Explanation:
During DNA extraction, chilled ethanol is added to the aqueous solution to precipitate DNA. DNA is insoluble in ethanol and appears as white, thread-like strands at the interface, making it easier to isolate.
🧠 Tip: Ethanol = DNA Precipitation ✨ (Keep it ice-cold for best results!)
#NEET2025 #BiotechnologyMCQ #DNAExtraction #EthanolPrecipitation #RecombinantDNATech #NEETBiology #BiologyMCQ #BiotechShorts #neetpreparation
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