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Cells
biology
| 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 |
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