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Biology

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Biology   The study of life  
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Organism   A living thing;one of many different forms of life  
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Cycle   A course or series of events or operations that repeats  
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Energy   the ability to do work  
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Law of conservation energy   energy cannot be created or destroyed  
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Cells   The basic unit of life  
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evolutuon   the changes in a population over time  
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species   a group of organisms that can reproduce with each other  
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adaptation   an adjustment to environmental conditions  
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ecosystems   all the living and nonliving things found in a particular area  
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diffusion   the movement of molecules from an area of high concentration to an area of low concentration  
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homeostasis   the ability of organisms to maintain internal conditions  
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transport   to move molecules from one side of a membrane to the other  
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osmosis   the movement of water through a cell membrane  
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Prokaryote   A cell with one outside membrane and no nucleus  
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Eukaryote   A cell with several internal structures, including a nucleus  
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Binary Fission   reproduction in which a bacterial cell divides into two cells that look the same as the original cell  
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Tissue   A group of cells that are similar and work together  
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Epithelial Cell   A skin cell  
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Nervous tissue   nerves made form a collection of nerve cells  
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Organ   A group of different tissues that work together to perform a specific function  
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Organ System   A group of organs that work together to perform specific connected tasks  
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Circulatory System   A collection of organs including the heart, which moves blood and gases throughout the body  
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bilayer   two layers  
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cell membrane   the membrane that surrounds a cell and separates it from its environment  
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cytoplasm   the area inside a cell;contains organelles and cytosol  
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cytosol   the third base of cytoplasm; contains molecules used and made by the cell  
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vas deferens   The tubes that connect the testes to the urethra  
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Estrogen   A female sex hormone  
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Fallopian Tube   A tube through which eggs pass from an ovary to the uterus  
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Gonad   An organ that makes gametes  
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Menstruation   The process during which an unfertilized egg,blood and pieces of the lining of the uterus exit the female body  
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Oocyte   An early egg cell that has not finished meiosis  
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Ovary   The female organ that makes egg cells  
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Semen   A mixture of fluid and sperm cells  
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Testosterone   A male sex hormone  
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Urethra   The tube that carries urine and semen out of the body  
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Uterus   An organ in most female mammals that holds and protects an embryo  
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gestation time   The period of development of a mammal from fertilization until birth  
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Fetus   An embryo after 8 weeks of development in the uterus  
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placenta   A tissue that provides the embryo with food and oxygen from its mother's body  
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Umbilical cord   The cord that connects an embryo to the placenta  
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Ingestation   The intake of food; the first stage of digestation  
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Pharynx   The passage between the mouth and esophagus for air and food  
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Peristalsis   The movement of digestive organs that pushes food through the digestive tract  
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Chyme   The liquid food in the digestive tract that is partially digested  
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Bile   A substance made in the liver that breaks down fats  
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Feces   The solid waste material remaining in the large intestine after digestion  
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Capillary   A blood vessel which oxygen and food molecules pass to body cells  
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Asthma   A condition that narrows or blocks the airways and makes breathing difficult  
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Bronchitus   An inflammation of the bronchial tubes  
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Epithelium   A thin layer of cells forming a tissue that covers body surfaces and lines some organs  
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Created by: matthewfr
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