Choose the correct explanation about metabolism
I) Occurs only in living cells
II) Anabolism + catabolism
III) Absent in viruses
IV) Defining feature of living organisms
V) Cannot be demonstrated in cell-free systems

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All except III

All except V

All except IV

All except I

answer is B.

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Detailed Solution

All living organisms are made of chemicals. These chemicals, small and big, belonging to various classes, sizes, functions, etc., are constantly being made and changed into some other biomolecules. These conversions are chemical reactions or metabolic reactions. All plants, animals, fungi and microbes exhibit metabolism.The sum total of all the chemical reactions occurring in our body is metabolism. Metabolic reactions can be demonstrated outside the body in cell-free systems.

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