What is the composition of protoplasm?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Protoplasm is the living substance within a cell, comprising all the material inside the cell membrane. Its composition includes: (1) Water – typically 75-85% of protoplasm, serving as the medium for chemical reactions, (2) Proteins – 10-20%, functioning as enzymes, structural components, and regulatory molecules, (3) Carbohydrates – 2-3%, providing energy and structural support, (4) Lipids – 2-3%, forming membranes and storing energy, (5) Nucleic acids (DNA and RNA) – controlling heredity and protein synthesis, and (6) Minerals and salts – essential for various cellular functions. Protoplasm is divided into cytoplasm (outside the nucleus) and nucleoplasm (inside the nucleus).
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