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Cell Structure
| Question | Answer |
|---|---|
| Organelle | any of a number of organized or specialized structures within a living cell. |
| Cytoplasm | the material or protoplasm within a living cell, excluding the nucleus. |
| Nucleus | a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material. |
| Nuclear Envelope | surrounds the genetic material and nucleolus in eukaryotic cells |
| Chromatin | The DNA double helix in the cell nucleus is packaged by special proteins termed histones |
| Chromosome | a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes |
| Nucleolus | a small dense spherical structure in the nucleus of a cell during interphase |
| Ribosome | a minute particle consisting of RNA and associated proteins, found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins |
| 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 |
| Golgi Apparatus | a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport |
| Lysosome | an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane |
| Cytoskeleton | a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence |
| Centrioles | a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division |
| Vacuole | a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid |
| Mitochondrion | an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur |
| Chloroplasts | a plastid that contains chlorophyll and in which photosynthesis takes place |
| Cell Wall | a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants, it consists mainly of cellulose |
| Cell Membrane | the semipermeable membrane surrounding the cytoplasm of a cell |
| Selectively Premeable | a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion |
Created by:
jmccarth
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