Where are organelles located?

• A. In the nucleus
• B. In the cytoplasm
• C. In the mitochondria
• D. In the endoplasmic reticulum

Answer: (B)

Organelles are the cell’s specialized structures that carry out specific tasks. In a typical eukaryotic cell, most of these structures sit in the cytoplasm, the fluid-filled region between the cell membrane and the nucleus. The cytoplasm includes the cytosol and all the organelles such as mitochondria, the endoplasmic reticulum, and the Golgi apparatus, all functioning within that space. The nucleus is a separate compartment that houses DNA and is surrounded by its own membrane, so it’s not the place where most organelles reside. Some components are found inside the nucleus (like the nucleolus), but the general location for organelles is the cytoplasm. Therefore, the cytoplasm is where organelles are located.