the smalles unit that can carry out all 8 characteristics of life


any living thing


an organism that is made of one cell


an organisme that is made of more than one cell


a part of a cell that has a specific function (kind of like an organ in your body)

cell membrane

an organelle that surrounds the cell and controls what goes into and comes out of the cell (kind of like your skin)


an organelle that tells the other organells what to do (kind of like your brain)


an organelle the produces energy for the cell

endoplasmic reticulum

an organelle that changes or modifies proteins and lipids


the organelle that makes proteins

Golgi complex

the organelle that packages proteins after they are made




an organelle that digests food and destroys harmful particles

cell wall

a stiff (rigid) structure that supports a plant cell


an organelle where plant cells make food


the process that plants use to make food


a group of cells that work together to perform a specific job (muscle tissue, skin tissue, etc.)


a group of two or more tissues that work together to perform a specific job (heart, liver, lungs, skin, etc.)

organ system

a group of organs that work together to perform a specific job (like the digestive system, the muscular system, the respiratory system, etc.)

The Cell Theory

1.) All organisms are mad of one or more cells. 2.) The cell is the basic unit of all living things. 3.) All cells come only from other cells.

Levels of Organization

cells, tissues, organs, organ systems, whole organisms


a jelly like fluid that allows organelles and chemicals to move safely around inside the cell

eukaryotic cell

a cell that has a nucleus

prokaryotic cell

a cell that does not have a nucleus

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