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7Sci CH19

7th Science CH19 How Cells Do Their Jobs

TermDefinition
diffusion process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached; occurs without the use of energy by the cell
fermentation energy-releasing process that breaks down glucose without the use of oxygen
organ body structure made up of various types of tissue that all work together to perform a specific function
organisms a living thing; may be one-celled or many-celled
organ systems groups of organs that work together to perform a specific function for example the circulatory system
osmosis diffusion of water through a semipermeable cell membrane from an area of higher concentration to an area of lower concentration until equilibrium is achieved; occurs without the use of energy by the cell
respiration series of chemical reactions by which energy is released from glucose in the presence of oxygen in your body
tissues groups of similar types of cells that work together to perform the same function