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Question

The building up and breaking down of protoplasm are concerned with the metabolism of
  1. Carbohydrates
  2. Proteins
  3. Lipids
  4. Minerals

A
Proteins
B
Lipids
C
Carbohydrates
D
Minerals
Solution
Verified by Toppr

The building up and breaking down of protoplasm involves two main process anabolism and catabolism which together forms metabolism. Proteins are always present in living matter and therefore play an important role in the anabolic and catabolic activities of protoplasm.
Therefore, the correct answer is option B.

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