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Definition
| process that spreads substances through a gas or liquid from higher to lower concentration |
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Definition
| an organ system that fights disease and foreing agents |
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Definition
| a chemical message that travels within an organism triggering a special action in certain cells |
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Definition
| a type of diffussion that allows water to pass a barrier but bars other substances |
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Definition
| the gel-like material that surrounds tha internal parts of a cell |
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Definition
| a disease caused by organism or viruses |
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Definition
| organ system that support the body and allows movement, includes all muscles and bones |
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Definition
| organ system made of nerves, serves to sense the enviroment and control other organ systems |
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Definition
| a part of a cell that directs all cell activities and carries information for cell reproduction. |
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Definition
| organ system that carries oxigen to the body and removes carbondioxide |
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Definition
| and organelle that makes food from sunlight water and corbondioxide |
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Definition
| a disease caused by malfunction of a body part not by an invading agent |
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Definition
| a structure that has a specific task within the cell. |
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Definition
| group of cells with a common structure and function |
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Definition
| two or more types of tissue that work together to perform a fucntion |
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