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LS Vocab 3
Cells: The Basic Units of Life
| Term | Definition |
|---|---|
| Lysosome | a special vesicle in cells that digests food particles, wastes and foreign invaders; called "suicide bags or clean-up crews" |
| 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 |
| Organ System | a group of organs working together to perform body functions |
| Organism | a living thing that can independently carry out the processes of life |
| Unicellular | a term used to refer to an organism made of a single cell |
| Population | a group of individuals of the same species that live together in the same area at the same time |
| Ecosystem | a community of organisms plus their nonliving environment |
| Organelles | tiny organs that float in a cell's cytoplasm that are sometime surrounded by a membrane |
| Multicellular | a term used to refer to an organism made of multilple cells |
| Community | all of the populations of different species that live and interact in an area |
| Cell Membrane | outermost part of an animal cell that separates the inside and the outside of the cell; made of phospholipids |
| Cytoplasm | cellular fluid surrounding a cell's organelles; all of the tiny organelles float in this fluid |
| Nucleus | membrane covered organelle in eukaryotic cells that contains DNA and serves as a control center; called the control center or "brains" of the cell |
| Eukaryotic | type of cell that does have a nucleus; the DNA is bound within the nucleus; Ex. plant, animal, protists and fungi |
| Cell Wall | outermost part of a plant cell; structure that surrounds the cell membrane and provides support |
| Endoplasmic Reticulum | an organelle that produces lipids, breaks down drugs, & packages proteins for release from the cell; called the "highway or delivery system" of the cell |
| Chloroplast | an organelle found in plant and algal cells where photosynthesis occurs; this organelle contains the green pigment chlorophyll |
| Vesicle | a membrane covered compartment that forms when the cell membrane surrounds an object and pinches off |
| Prokaryotic | type of cell that does NOT have a nucleus; the DNA floats in the cytoplasm; ex. bacteria |
| Bacteria | extremely small, single celled organisms WITHOUT a nucleus; they are called prokaryotic |
| Ribosome | small organelles in cells where amino acids are hooked together to make proteins; attached to the RER; called "protein factories" |
| Mitochondria | an organelle surrounded by two membranes that break down food molecules to make ATP; called the "power plant or power house" of the cell |
| Golgi Complex | an organelle that modifies, packages and transports materials out of the cell; called the "chemical processing and packaging center" |
| Vacuole | large structures in plant cells and small structures in animal cells that store water and other liquids; called a "storage tank" |
Created by:
harrisonk102
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