High-Frequency NEET PYQ Topics in Cell Biology
PYQ Category 1: Ribosome Questions (Appears almost every year)
- Q: "Ribosomes found in mitochondrial matrix are of ___ type" → Answer: 70S
- Q: "70S ribosomes are composed of ___ and ___ subunits" → 50S and 30S
- Q: "Which of the following has 70S ribosomes?" → Both prokaryotic cells AND mitochondria/chloroplasts
- Strategy: Drill the 70S rule until it is automatic
PYQ Category 2: Organelle Nicknames
- Lysosomes = "Suicide bags" (tested almost every 2 years)
- Mitochondria = "Powerhouse of the cell"
- Golgi = "Traffic police" or "Post office"
PYQ Category 3: Fluid Mosaic Model
- Always ask for year: 1972, AND proposers: Singer and Nicolson
- Common trap: confusing with Davson-Danielli (1935) or Watson-Crick (1953)
PYQ Category 4: Semi-Autonomous Organelles
- "Which organelle has its own DNA and ribosomes?" → Mitochondria AND Chloroplasts
- "Endosymbiotic theory is supported by ___" → 70S ribosomes + circular DNA + binary fission
PYQ Category 5: Plant vs Animal Cell
- Cell plate → plant; Cleavage furrow → animal
- Centrioles → animal (not plant); Plastids → plant (not animal)
- Large vacuole → plant; Lysosomes → animal
PYQ Category 6: Cell Theory Scientists
- "Omnis cellula e cellula" → Virchow
- Cell Theory → Schleiden & Schwann
- "Cell" term coined by → Robert Hooke (1665)
Expected Frequency in NEET 2026: This chapter contributes 3–4 questions per year. The most likely question types: (1) ribosome identification in specific organelles, (2) organelle function matching, and (3) plant vs. animal cell feature identification.