What are the Physical Properties of protoplasm ?
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Physical properties of protoplasm
TYPES : Gel - semisolid state
Sol - liquid state
Protoplasm - translucent (semi transparent), odourless, polyphasic fluid
viscosity - 2 to 20 centipoises
Refractive index - 1.4
pH - 6.8, contains 90% water
3 main phenomenon - Brownian movement, amoeboid movement, cyclosis
elements - 34 elements are present , but 13 elements are universal element
Electricity - neither good nor bad conductor
cohesiveness - particles are joined by vander waal's bond (hold long chain of molecules together
Surface tension - protein and lipids have less surface tension & NaCl have high surface tension
Physical Properties of Protoplasm :
1. Phase Reversal : Due to difference in temperature outer part is gel and inner part is sol.
2.Tyndall Effect : As protoplasm is colloidal in nature it exhibits Tyndall effect.
3. Surface Tension : Protoplasm being fluid in nature has surface tension.
4. Elasticity and Contractility : It is due to folding and unfolding nature of proteins.
5.Viscosity : The protoplasm has a viscosity of 2-25 centipose
6. pH : Protoplasmic pH is around 6-8.
7. Refractive Index : Protoplasm has a refractive index of 1.4
8. Protoplasm coagulates at 60°C and on reacting with acid and base.
These are all the physical properties of protoplasm.
