What term describes the region of the cell outside the nucleus that contains cytosol and organelles?

• A. Cytoplasm
• B. Nucleolus
• C. Chromatin
• D. Nucleus

Answer: (A)

Understanding cellular compartments: the region outside the nucleus that contains the fluid cytosol and the various organelles is the cytoplasm. The cytoplasm sits between the plasma membrane and the nuclear envelope, filling much of the cell interior and hosting structures like mitochondria, endoplasmic reticulum, and vesicles. The nucleolus is a substructure inside the nucleus where RNA is synthesized; chromatin is the DNA–protein complex packaged in the nucleus; the nucleus itself is the membrane-bound organelle that houses the cell’s genetic material. Since the description specifies the area outside the nucleus containing cytosol and organelles, cytoplasm is the correct term.