BiologyFundamental ConceptNCTB জীববিজ্ঞান অধ্যায় ২ (জীবকোষ ও টিস্যু)
Cell
Bengali: কোষ•Pronunciation: সেল•Symbol: \text{Cell}
Standard Definition:
The basic structural, functional, and biological unit of all known organisms, often called the building block of life.
📐 Mathematical Equation, Units & Dimensions
Defining Mathematical Equation
Standard SI Unit
Size: micrometer (\mu m)(আকার: মাইক্রোমিটার ($\mu m$))
Dimensional Analysis
CGS Unit
cm
📖 Physical Concept & Comprehensive Explanation
Discovered by Robert Hooke in 1665, cells are the foundational units of living tissue. Prokaryotes lack membrane-bound nuclei, whereas eukaryotes possess distinct nuclei and specialized organelles such as mitochondria and chloroplasts.
🎯 High-Yield Revision Points
- ✓The universal structural and metabolic unit of life.
- ✓Classified into prokaryotic and eukaryotic architectures.
- ✓Plant cells feature cell walls, chloroplasts, and large central vacuoles.
Use Online Solver for Cell
Compute step-by-step solutions, verify formulas, and plot interactive diagrams on biggan.me.
❓ Frequently Asked Exam Questions (FAQ)
Common questions in board and competitive entrance examinations
Q1: State two key differences between plant and animal cells.
Plant cells possess rigid cellulose cell walls and chloroplasts, both absent in animal cells.