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Unit 2-Cells
| Term | Definition |
|---|---|
| cell membrane | the semipermeable membrane enclosing the cytoplasm of a cell. |
| Cell wall | Structure that surrounds a cell and maintains its chape and rigity |
| cellular respiration | Metabolic reaction that use the energy primarly from carbohydrates but also fatty acids or amino acid breakdown to produce ATP molecules |
| Chloroplast | Membranous organelle that contains chorophyll and is the site of photosynthesis |
| Chromatin | Network of fibrils consisting of DNA and associated proteins observed within a nuclleus that is not dividing |
| Chromosome | Rodlike structure in the nucleus seen during cell divison; contains hereditasy units or genes |
| Chromatin | Networks of fibrils consisting of DNA associated proteins observed within a nucleus that is not dividing. |
| Chromosome | Rodlike structure in the nucleus seen during cell divison;contains the hereditary units, or genes |
| Cristae | Short, finger like projections formed by the folding og the inner membrane of mitochondria |
| Cytoplasm | Contents of the cell between the nucleus and the plasma membrane that contains the organelles. |
| Cytoskeleton | Internal framework of the cell consisting of microtubules, actin filaments, and intermediate filaments |
| Golgi Bodies | Organelle, consisting of flattened saccules and also vesicles that processes, packages, and distributes molecules about or from the cell. |
| Lysosome | Membrane-bounded vesicle that contains hydrolytic enzymes for digesting macromolecules |
| Matrix | Unstructured semifluid substance that fills the space between cells in connective tissues or inside organelles |
| Mitochondria | membrane bonded organelle in which ATP molecules are produced during the process of cellular repiration |
| Nuclear envelope | Double membrane that surrounds the nucleus and is continuous with the endoplasmic reticulum |
| Nuclear pore | Opening in the nuclear envelops that permits the passage of proteins into the nucleus and ribosomal subunits out of the nucleus |
| Nucleolus | dark-staining, spherical body in the nucleus that produces ribosomal subunits |
| Nucleus | membrane-bounded organelle within a eukaryotic cell that contains chromosomes and controls the structure and function of the cell. |
| Organelle | small, often membranous structure in the cytoplasm, having a specific structure and function |
| Polysome | a complex of ribosomes strung along a single strand of messenger RNA that translates the genetic information coded in the messenger RNA during protein synthesis. |
| Ribosome | RNA and protein in two subunits;site of protein synthesis in the cytoplasm |
| Rough endoplasmic reticulum | a network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface (smooth endoplasmic reticulum) or studded with ribosomes (rough endoplasmic reticulum) involved in the transport of materials. |
| Smooth endolpasmic reticulum | a network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface (smooth endoplasmic reticulum) or studded with ribosomes (rough endoplasmic reticulum) involved in the transport of materials. |
| vacuole | Membrane bounded sac that holds fluid and a variety of other substances |
| vesicle | Small, membrane bounded sac that stores substances within a cell |
Created by:
StephanieAvery
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