Term | Definition |
Cell (plasma) Membrane | The membrane surrounding the cytoplasm of a cell. |
Cytoplasm | The material or protoplasm within a living cell, excluding the nucleus. |
Nucleus | a dense organelle present in most eukaryotic cells |
Nucleolus | a small dense spherical structure in the nucleus of a cell during inter phase |
Nuclear Membrane | A double-layered lining that encloses a cell nucleus and allows certain molecules to pass through |
Endoplasmic Reticulum | A network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane |
Ribosomes | A minute particle consisting of RNA and associated proteins, found in large numbers in the cytoplasm of living cells |
Mitochondria | An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur |
Golgi Body | An organelle, consisting of layers of flattened sacs, that takes up and processes secretory and synthetic products from the endoplasmic reticulum |
Centrioles | A minute cylindrical organelle near the nucleus in animal cells |
Vacuole | A space or vesicle within the cytoplasm of a cell |
Lysosome | An organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane |
Peroxisome | A small organelle that is present in the cytoplasm of many cells and that contains the reducing enzyme catalase and usually some oxidases |
Chloroplasts | (In green plant cells) A plastid that contains chlorophyll and in which photosynthesis takes place |
Cell Wall | In the algae and higher plants, it consists mainly of cellulose |