Living cell contains $60 - 75$ % water. Water present in human body is

60 - 65

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50 - 55

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75 - 80

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65 - 70

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Solution

The correct option is C $65 - 70$ %
Our cells are made of 60-75% water, hence most of the enzymes and protein molecules, our genetic material, all are water soluble and are evolved in a way to co-exist in water surrounding environment. Thus our proteins are folded in a way where the hydrophobic amino acid residues are folded inside the protein and hydrophilic residues face the hydrated outer environment. Similarly our DNA, RNA are all water soluble. Since the structural and functional unit of our body, consists of 60-75% of water hence, the entire human body is expected to have similar water content.
So, the correct answer is '65−70%'.

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