cytology-study of cells-5

12 terms by zachnorrgran

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cell theory

all living things are made of cells

eukaryote

organism whose cells contain nuclei

prokaryote

unicellular organism lacking a nucleus

carbohydrates

main source of energy for the body

lipids

fats and oils

proteins

macromolecules that contain nitrogen as well as carbon, hydrogen, and oxygen

cell membrane

thin, flexible barrier around a cell; regulates what enters and leaves the cell

diffusion

the property of being diffused or dispersed

active transport

the movement of materials through a cell membrane using energy

osmosis

diffusion of water across a selectively permeable membrane

plankton

Tiny, free-floating organisms that occur in aquatic environments

microscope

used to see microscopic objects up close

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