Mycoplasma, Virus, Viroid, Prion & Lichens | NEET and Class XI CBSE Boards | Neela Bakore Tutorials

◀ PREVIOUS VIDEO (11/37): Monera – Economic Importance of Bacteria    • Economic Importance of Bacteria – Useful &...   ▶ CURRENT VIDEO (12/37): Mycoplasma, Virus, Viroid, Prion & Lichens    • Mycoplasma, Virus, Viroid, Prion & Lichens...   ▶ NEXT VIDEO (13/37): Protista – Introduction    • Kingdom Protista Introduction – Eukaryotic...   🔗 Full Playlist: [https://studio.youtube.com/playlist/P...] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🎓 Mycoplasma, Virus, Viroid, Prion & Lichens | Chapter 2 – Biological Classification | NEET & Class XI CBSE Board 📖 In this video (Video 12/37), Dr. Neela Bakore explains: 📌 Mycoplasma – smallest living organisms, no cell wall, pleomorphic 📌 Viruses – obligate intracellular parasites, protein coat + nucleic acid 📌 Viroids – only RNA, no protein coat (discovered by Diener) 📌 Prions – only misfolded protein, cause mad cow disease 📌 Lichens – symbiotic association of algae + fungi 📌 NEET high-yield differentiators ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Transcript with Timestamp 0:00 Discussing organisms smaller than bacteria and disease-causing particles: mycoplasma, viruses, viroids, prions, and lichens. 1:09 Mycoplasma — smallest living organism WITHOUT cell wall — placed in Kingdom Monera — also known as PPLO (pleuropneumonia-like organisms) — most are pathogenic. 2:44 Viruses — non-cellular organisms — have: genetic material (RNA or DNA) + protein capsid — capsomeres arranged helically or as polyhedra. 4:35 RNA-containing viruses = retroviruses — require reverse transcriptase enzyme for central dogma. 5:57 Most plant viruses have single-stranded RNA; animal viruses can have single- or double-stranded DNA. 6:33 Term 'virus' derived from venom/poison — given by Pasteur; Ivanowski first identified; Beijerinck confirmed it; Stanley crystallised the virus. 8:38 Viruses are obligate parasites — can only reproduce inside a host cell — no place in Whittaker's classification. 9:14 Viroids — naked single-stranded circular RNA (no protein capsid) — discovered by Diener — causes disease in potato tubers. 10:02 Prions — only protein — proteinaceous infectious particles — disease-causing protein only (no nucleic acid). 10:26 Lichens — permanent symbiotic association of algae (phycobiont) and fungi (mycobiont) — algae provide food; fungi provide water and shelter — sensitive pollution indicators especially to SO₂. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Amazon Brand Store at https://www.amazon.in/neelabakoretuto... Complete Study Notes (11th and 12th) are available at: https://amzn.to/3K4Li7k Complete Study Notes for 12th are available at: https://amzn.to/3PRhWjm Complete Study Notes for 11th are available at: https://amzn.to/4uw1hBa The study notes for this unit Diversity in Living World are available at https://amzn.to/3r8qkyH The study notes for other units: - Structural Organisation in Plants and Animals - https://amzn.to/3r2cxmZ Cell: Structure and Functions - https://amzn.to/2GPagcm Plant Physiology - http://amzn.to/2EZR5HS Human Physiology - http://amzn.to/2DA46ea Reproduction - https://amzn.to/2wu43eS Biotechnology - http://amzn.to/2EZyqf9 Genetics & Evolution https://amzn.to/2Sh27jW Biology in Human Welfare https://amzn.to/4dPRZd7 Ecology https://amzn.to/3RwuOvF ____________________________________________ For business inquiries: abhibakore@gmail.com ___________________________________________ #neet2027biology #biologicalclassification #neetbiology #class11biology #diversityinlivingworld #neelabakore #neelabakoretutorials #cbsebiology #neetpreparation #biologychapter2