1. Cytosol: The gel-like substance that fills the cell and surrounds the organelles. 2. Cell Organelles: Specialized structures that perform distinct functions. These include the mitochondria, endoplasmic reticulum (ER), Golgi apparatus, lysosomes, and ribosomes. 3. Cytoskeleton: A network of protein fibers, including microfilaments, intermediate filaments, and microtubules, which provide structural support and facilitate cell movement and division. 4. Inclusions: Non-membrane-bound entities, such as lipid droplets, glycogen granules, and pigment granules.
