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PHYSICAL PROPERTIES OF PROTOPLASM -
1. Phase reversal - Due to difference in temperature outer part is gel and inner part of sol
2. Tyndall effect - Being colloid, protoplasm exhibits "Tyndall effect" i.e. scattering of incident light rays. If colloid particles are large, Then white and if they are small then blue light is absorbed.
3. Elasticity & Contractility - It is due to folding and unfolding nature of protein. Protoplasm can spread 25 times to its form.
4. Surface Tension - Being a liquid mixture the protoplasm have a surface tension. Lipid and protein are having high surface tension, therefore, around cytoplasm plasmalemma is present made up of lipoprotein.
5. Viscosity - 2 - 20 centipoises
6. pH - 6 - 8
7. Refractive index - 1.4
8. Coagulation - Coagulate at 60ºC on reacting with acid and base.
This process involves the regulation of the concentration of the body fluids through control of water content and salt content of the blood. If a person loses water from their bloo
Essential and Non – Essential Amino Acids The requirement of essential amino acids differs from organism to organism. Some bacteria require only one amino acid in sufficient q
NAILS - Cover terminal segment of fingers & toes. Highly vascular dermis under lying the nail is called nail bed . It gives pinkish colour to nail. The small part
What is Exposure Assessment Exposure Assessment : The qualitative and quantitative evaluation of the degree of intake likely to occur.
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what direct or indirect effect is " acid rain" thought to have on (I) lakes, (ii) forests and (iii) buildings
Cell - Cell is the structural & functional unit of life. Study of the structure of the cell is called cytology. Study of structure and functions of the cell is called
Genetic engineering has been successfully used for producing: 1. Transgenic mice for testing safety of polio vaccine before use in humans 2. transgenic models for studying ne
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Explain what is tooth formula? Ans) Formulae of tooth is (2, 1, 3, 2)
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