The cell is the structural and functional unit of all known living organisms. It is the smallest unit of an organism that is classified as living, and is sometimes called the building block of life. Some organisms, such as bacteria, are unicellular (consist of a single cell). Other organisms, such as humans, are multicellular.
Ribosome Mitochondrion Cytoplasm Cell nucleus DNA Golgi apparatus Cell membrane Eukaryote Vacuole Cell division Messenger RNA Cytoskeleton Lipid bilayer RNA Chromosome Vesicle (biology) Prokaryote Endoplasmic reticulum Chloroplast Cell wall Protein Centrosome Endosymbiotic theory Binary fission Centriole Flagellum Lysosome Bacteria Genetic code Nucleolus Organelle Meiosis Transcription (genetics) Robert Hooke Mitosis Archaea Enzyme Genome Nucleoid Amino acid
