What is the living material inside a cell that exists outside the nucleus?

• A. Cytoplasm
• B. Cytosol
• C. Organ
• D. Diffusion

Answer: (A)

The living material inside a cell that lies outside the nucleus is the cytoplasm. It isn’t just the fluid part; it includes the cytosol (the watery solution) plus the various organelles like mitochondria and ribosomes that sit in that fluid. This is where most of the cell’s metabolic activities occur, from energy production to protein synthesis. The nucleus, by contrast, houses genetic material, so the material outside it is cytoplasm. The fluid alone (cytosol) is part of the cytoplasm, but the full living material outside the nucleus is best described as the cytoplasm. Diffusion is a process, not a material, and an organ is a structure, not the living material surrounding the nucleus.