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cytology-study of cells-5
all living things are made of cells
organism whose cells contain nuclei
unicellular organism lacking a nucleus
main source of energy for the body
fats and oils
macromolecules that contain nitrogen as well as carbon, hydrogen, and oxygen
thin, flexible barrier around a cell; regulates what enters and leaves the cell
the property of being diffused or dispersed
the movement of materials through a cell membrane using energy
diffusion of water across a selectively permeable membrane
Tiny, free-floating organisms that occur in aquatic environments
used to see microscopic objects up close