Chapter 5 of 16
Syllabus
Cell Structure and Organization — Syllabus
Maharashtra Board · Class 11 · Biology
What Cell Structure and Organization covers in Maharashtra Board Class 11 Biology: 4 topics, for the 2026-27 session.
45 questions23 flashcards5 concepts
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4 Topics · Maharashtra Board Class 11 Biology · 2026-27
Topics in Cell Structure and Organization
1
Cell Theory and Basic Concepts
- Cell is the structural and functional unit of life capable of independent existence
- Cell theory was proposed by Schwann and Schleiden, later modified by Rudolf Virchow who stated 'Omnis cellula-e-cellula' (all cells arise from pre-existing cells)
- Modern Cell Theory postulates: All living organisms are made of cells, cells arise from pre-existing cells, cell is structural and functional unit, total cell activities = organism activity, cells sho
2
Prokaryotic Cells
- Lack well-defined nucleus and membrane-bound organelles
- Cell envelope: Three-layered structure with glycocalyx (outer), cell wall (middle), plasma membrane (inner)
- Glycocalyx: Present as slime layer (loose) or capsule (tough)
3
Eukaryotic Cell Structure
- Cells with well-defined nucleus enclosed by nuclear membrane
- Presence of membrane-bound organelles
- Found in protists, plants, animals, and fungi
4
Cell Wall and Plasma Membrane
- Cell Wall: Present in plants, fungi, some protists. Made of cellulose, hemicellulose, pectin, lignin
- Three layers: Middle lamella (pectin), Primary wall (growth capable), Secondary wall (rigid support)
- Plasmodesmata: Cytoplasmic bridges between neighboring plant cells
Key Concepts
The cell theoryProkaryotic cells lack a wellProposed by Singer and Nicholson (1972)A coordinated network of organelles includingThe capacity of a living nucleated
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What are the important topics in Cell Structure and Organization for Maharashtra Board Class 11 Biology?
Key topics in Cell Structure and Organization include Cell Theory and Basic Concepts, Prokaryotic Cells, Eukaryotic Cell Structure, Cell Wall and Plasma Membrane. Study these first, then practise questions on each for Class 11 exams.
How should I revise Cell Structure and Organization for Class 11 exams?
Learn the core ideas first, then work through the 45 practice questions on Cell Structure and Organization. Revise definitions regularly and use flashcards for quick recall before the exam.
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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