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Each cell contains 50% water by weight....

Each cell contains 50% water by weight.

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Each cell contain 70% water by weight.
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Blood plasma contains 90% of water.

Each human cell contain_______ pair of chromosomes.

A calorimeter containes 50g of water at 50^(@)C . The temperature falls to 45^(@)C in 10 minutes. When the calorimeter contains 100g of water at 50^(@)C it takes 18 minutes for the temperature to become 45^(@)C . Find the water equivalent of the calorimeter.

A container of volume 50 cc contains air (mean molecular weight = 28.8g ) and is open to atmosphere where the pressure is 100kPa . The container is kept in a bath containing melting ice (0^(@)C) .(a) Find the mass of the air in the container when thermal equilibrium is reached.(b) the container is now placed in another bath containing boiling water (100^(@)C) . Find the mass of air in the container. (C) The container is mow closed and placed in the melting-ice bath. Find the pressure of the air when thermal equilibrium is reached .

Our body contains____% of water.

_____water contains 0.05% to 1% of salts.

1. Muscle - (i) Myofibrils 2. Rod structure - (ii) 40-50% of body weight 3. Connective tissue - (iii) Tendon 4. Collagen fibres - (iv) Epimysium

CHETAN PUBLICATION-LIFE PROCESSES IN LIVING ORGANISMS PART-1-True and False
  1. Meiosis II is ……..

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  2. We get 9 Kcal of energy per gram of carbohydrates

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  3. Tricarboxylic acid cycle (Kreb’s cycle) occurs in mitochondria.

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  4. Glycolysis is also called Kreb’s cycle.

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  5. During anaerobic respiration of muscles, citric acid accumulates in th...

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  6. Glucose is incompletely oxidised in anaerobic respiration.

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  7. Proteins of plant origin are called as first class proteins

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  8. Excess of amino acids obtained from proteins are not stored in the bod...

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  9. We get 4 Kcal of energy per gram of lipids.

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  10. Each cell contains 50% water by weight.

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  11. Blood plasma contains 90% of water.

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  12. Vitamins B and C are water - Soluble vitamins

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  13. We can digest fibres.

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  14. 2 molecules of ATP are obtained from each FADH(2), molecule.

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  15. Before cell division , the cell doubles up its chromosome number.

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  16. All chromosomes are arranged parallel to the equatorial plane of the c...

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  17. Condensation of thin thread like chromosomes starts in telophase.

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  18. Sister chromatids are pulled apart in metaphase.

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  19. Plant cell divides by formation of a notch at the equatorial plane of ...

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  20. Seeds perform anaerobic respiration if submerged under water during g...

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