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Cells Vocabulary
Term | Definition |
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Cell Membrane | A phospholipid layer that covers a cellâs surface and acts as a barrier between the inside of a cell and the cellâs environment. |
Organelle | One of the small bodies in a cellâs cytoplasm that are specialized to perform a specific function. |
Nucleus | In a eukaryotic cell, a membrane-bound organelle that contains the cellâs DNA and that has a role in processes such as growth, metabolism, and reproduction. |
Prokaryote | A single-celled organism that does not have a nucleus or membrane-bound organelles; examples are arckea and bacteria. |
Eukaryote | In a modern taxonomic system, a domain made up of all eukaryotes; this domain aligns with the traditional kingdoms Protista, fungi, plantae, and animalia. |
Cell Wall | A rigid structure that surrounds the cell membrane and provides support to the cell. |
Mitochondrion | In eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration. |
Lysosome | A cell organelle that contains digestive enzymes. |