MCQs + Assertion & Reason
(2026)”
LEMMY WORKS
, 📘 UNIT 1: CELL BIOLOGY
Cell Theory
All living organisms are made of cells
Cell is the basic unit of life
All cells arise from pre-existing cells
Cell Structure
Cell membrane: selectively permeable
Nucleus: contains DNA, controls activities
Mitochondria: powerhouse of the cell (ATP production)
Ribosomes: protein synthesis
Endoplasmic Reticulum (ER):
Rough ER → proteins
Smooth ER → lipids
Important Points
Prokaryotes: no nucleus (bacteria)
Eukaryotes: true nucleus (plants & animals)