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| Question | Answer |
|---|---|
| cytokinesis | the division of the cytoplasm of a cell |
| cell | in biology the smallest unti that can perform all life processes, they are covered by a membrane and have DNA and cytoplasm |
| procaryote | a single-celled organism that does not have a nucleus or membrane-bound organelles; examples are archaea and bacteria |
| cell membrane | a phospholipid layer that covers a cell’s surface and acts as a barrier between the inside of a cell and the cell’s environment |
| eukaryote | an organism made up of cells that have a nucleus enclosed by a membrane; eukaryotes include protists, animals, plants, and fungi but not archaea or bacteria |
| organelle | one of the small bodies in a cell’s cytoplasm that are specialized to perform a specific function |
| lysosome | a cell organelle that contains digestive enzymes |
| endoplasmic reticulum | a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids |
| cell wall | a rigid structure that surrounds the cell membrane and provides support to the cell |
| ribosome | a cell organelle composed of RNA and protein; the site of protein synthesis |
| vesicle | a small cavity or sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell |
| mitochondrion | in eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration, which produces ATP |
| nucleus | in a eukaryotic cell, a membrane-bound organelle that contains the cell’s DNA and that has a role in processes such as growth, metabolism, and reproduction |
| cell cycle | the life cycle of a cell |
| golgi complex | a cell organelle that helps make and package materials to be transported out of the cell |
| chromosomes | in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the main ring of DNA |
| mitosis | in eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes |
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