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Found in most cells. It is another packaging organelle like the endoplasmic reticulum. Named after Camillo Golgi, an Italian biologist.
Any organism whose cells contain a nucleus and other organelles enclosed within membranes.
It functions as a micro-machine for making proteins. They are composed of special proteins and nucleic acids.
A thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins.
A single-celled organism that lacks a membrane-bound nucleus (karyon), mitochondria, or any other membrane-bound organelle.
A rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria.
A whip-like structure that allows a cell to move. Found in all three domains of the living world: bacteria, archaea, and eukaryota.
Minute hair-like organelles, identical in structure to flagella, that line the surfaces of certain cells and beat in rhythmic waves, providing locomotion to ciliate protozoans and moving liquids along internal epithelial tissue in animals.
This biological membrane separates the interior of all cells from the outside environment.
The organization or system used for doing or operating something.
In cell biology, it is one of several structures with specialized functions, suspended in the cytoplasm of a eukaryotic cell.
A small, spherical to rod-shaped, membrane-bounded cytoplasmic organelle, the principal sites of ATP synthesis.
A dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material.
Membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers--proteins, nucleic acids, carbohydrates, and lipids. They function as the digestive system of the cell.
A plastid in the cells of green plants and green algae that contains chlorophylls and carotenoid pigments and creates glucose through photosynthesis.
A type of organelle in the cells of eukaryotic organisms that forms an interconnected network of flattened, membrane-enclosed sacs or tube-like structures known as cisternae. They can be smooth or rough.
A fine network formed by cells, by certain structures within cells, or by connective-tissue fibers between cells.
This is the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.