Chapter 4 of 11
Syllabus
Transportation of materials through Plasma Membrane — Syllabus
Telangana Board · Class 9 · Biology
Transportation of materials through Plasma Membrane topics: Plasma Membrane Structure and Properties, Osmosis - Movement of Water, Diffusion - Movement.
45 questions20 flashcards5 concepts
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4 Topics · Telangana Board Class 9 Biology · 2026-27
Topics in Transportation of materials through Plasma Membrane
1
Plasma Membrane Structure and Properties
- Plasma membrane is the outermost, extremely delicate, elastic and membranous covering that separates cell contents from external environment
- It is selectively permeable - allows entry of certain substances while preventing passage of others
- The membrane is living and flexible, enabling various cellular processes
2
Osmosis - Movement of Water
- Osmosis is the movement of water from less solute concentration to more solute concentration across a membrane
- Water always moves toward the sugar/salt solution (higher concentration)
- Demonstrated through raisin experiment - raisins swell in water, shrink in salt solution
3
Diffusion - Movement of Particles
- Diffusion is the process by which materials spread equally throughout a medium like air or water
- Demonstrated through scent spreading in room, coffee powder in water, KMnO₄ crystal spreading
- Particles move from high concentration to low concentration until uniform distribution
4
Solutions and Concentration
- Solution = Solute (substance dissolved) + Solvent (dissolving medium)
- Saturated solution: no more solute can dissolve at given temperature
- Concentration: amount of solute present in given amount of solvent
Key Concepts
The plasma membrane is the outermostOsmosis is the movement of waterDiffusion is the process bySolutions can be classified based onA membrane that allows solvent (like
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What are the important topics in Transportation of materials through Plasma Membrane for Telangana Board Class 9 Biology?
Key topics in Transportation of materials through Plasma Membrane include Plasma Membrane Structure and Properties, Osmosis - Movement of Water, Diffusion - Movement of Particles, Solutions and Concentration. Study these first, then practise questions on each for Class 9 exams.
How should I revise Transportation of materials through Plasma Membrane for Class 9 exams?
Learn the core ideas first, then work through the 45 practice questions on Transportation of materials through Plasma Membrane. Revise definitions regularly and use flashcards for quick recall before the exam.
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