Cells are the basic structural and functional units of all living organisms. They consist of several key components:
Nucleus: Contains the cell's genetic material and controls cellular activities. Cytoplasm: The gel-like substance enclosed within the cell membrane, containing organelles. Mitochondria: Produce energy through cellular respiration. Ribosomes: Sites of protein synthesis. Endoplasmic Reticulum: Involved in protein and lipid synthesis; rough ER has ribosomes, smooth ER does not.
