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Cells & Functions
| Term | Definition |
|---|---|
| cell | "little rooms", or the basic unit of living things |
| tissue | a group of similar cells that work together to perform a specific job in the body |
| organ | a combination of two or more tissues that work together to perform a specific function in the body |
| organ system | a group of organs that works together to perform body functions |
| organism | anything that can live on it's own |
| population | a group of individuals of the same species that live together in the same area at the same time |
| community | all of the populations of different species that live and interact in an area |
| ecosystem | a community of organisms and their nonliving (abiotic) envirinment |
| unicellular | made of a single cell |
| multicellular | made of many cells |
| cell membrane | a phospholipid layer that covers a cell's surface and acts as a barrier between the inside of a cell and a cell's environment |
| organelles | a structure within a cell, sometimes surrounded by a membrane |
| cytoplasm | cellular fluid surrounding a cell's organelles |
| nucleus | the membrane covered organelle found in eukaryotic cells, contains the cells DNA, serves as the control center for the cell |
| prokaryotic | a cell that does not have a nucleus or any other membrane covered organelles; bacteria |
| eukaryotic | a cell that contains a central nucleus and a complicated internal structure |
| bacteria | extremely small single-celled organisms without a nucleus, prokaryotic cells |
| cell wall | a structure that surrounds the cell membrane of some cells, and provides strength and support to the cell membrane |
| ribosome | a small organelle in cells where proteins are made from amino acids |
| endoplasmic reticulum | a membrane covered organelle that produces lipids, breaks down drugs, and other substances, packages proteins for delivery out of the cell |
| mitochondria | cell organelles surrounded by 2 membranes that break down food molecules to make ATP or energy |
| nucleolus | a dark spot in the nucleus that stores the materials to make ribosomes in the cytoplasm |
| Golgi complex | the cell organelle that modifies, packages, and transports materials out of the cell |
| chloroplast | an organelle found in plant and algae cells where photosynthesis occurs |
| vesicle | a membrane covered compartment in a eukaryotic cell that forms when part of the cell membrane surrounds an object and pinches off |
| vacuole | a large membrane covered structure found in plants that serves as a storage container for water and other liquids |
| lysosome | special vesicals in animal cells that contain enzymes to break down worn out organelles |
Created by:
pdobias
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