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Cells
Science Grade 7
Question | Answer |
---|---|
osmosis | the movement of water across a membrane |
selectively permeable | the cell membrane allows certain materials to pass through and keeps other materials out |
organelle` | a structure within a cell that performs a certain job |
tissue | a group of cells working together |
chloroplasts | cell structure found in plant cells that contains chlorophyll to perform photosynthesis |
mitochondria | the cell structure that creates energy through cellular respiration |
endoplasmic reticulum (ER) | passageways from the nucleus that transport proteins through the cell |
nucleus | the control center of a cell |
cytoplasm | the jelly-like substance within a cell |
cell membrane | a selectively permeable structure that allows certain things to come in and out of the cell |
vacuole | cell structure that stores food an water for the cell |
aerobic respiration | energy production with oxygen |
anaerobic respiration | energy production without oxygen |
diffusion | the process by which molecules move from an area of high concentration to an area of low concentration |
equillibrium | when the number of molecules is equal both inside and outside of the cell. |
ribosomes | cell structure responsible for making proteins |