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

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