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Science vocabulary chapter 3
11 cards·by christamathew5
diffusion
the movement of molecules from areas of greater concentration to areas of lower
concentration
osmosis
the diffusion of water through a cell membrane
equilibrium
condition in which molecules of a substance are spread evenly throughout space
passive transport
movement of materials across a cell membrane without the use of energy
active transport
movement of materials across a cell membrane with the use of energy
exocytosis
a process in which a cell moves large moleules out through the cell membrane
endocytosis
a process by which cells transporta large body, such as a large protein molecule, through a
cell membrane into the cytoplasm
metabolism
all of the chemical activities of an organism that enable it to live, grow and reproduce
producer
an organism, such as green plants, that makes its own food by photosynthesis
consumer
organisms that can't make their own food
fermentation
a form of respiration that converts energy from glucose when the supply of oxygen is not
sufficient