Term | Definition |
cell theory | A scientific theory which describes the properties of cells. |
cytoplasm | He material or protoplasm within a living cell, excluding the nucleus. |
organelle | any of a number of organized or specialized structures within a living cell. |
prokaryotic cell | any of the typically unicellular microorganisms that lack a distinct nucleus and membrane-bound organelles and that are classified as a kingdom |
eukaryotic cell | An organism whose cells contain a nucleus surrounded by a membrane and whose DNA is bound together by proteins (histones) into chromosomes. The cells of eukaryotes also contain an endoplasmic reticulum. |
Cytoskeleton | a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence. |
Nucleus | the central and most important part of an object, movement, or group, forming the basis for its activity and growth. |
Endoplasmic reticulum | a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis. |
Ribosome | protein builders or the protein synthesizers of the cell. |
Golgi apparattus | a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport. |
Vesicle | a fluid- or air-filled cavity or sac, in particular. |
Mitochondrion | an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers |
Vacuole | a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid. |
Lysosome | an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane. |
Centiole | |
Cell wall | |
Chloroplast | |
Cell mebrane | |
Phospholipid | |
Fluid mosaic model | |
Selective permeability | |
Receptor | |
Passive transport | |
Diffusion | |
Concentration gradient | |
Osmosis | |
Isotonic | |
Hypertonic | |
Hypotonic | |
Facilitated diffusion | |
Active transport | |
Endocytosis | |
Phagocytosis | |
exocytosis | |