Front

The smallest unit of life.

Back

Cell

Front

The theory that states that all living things are made of one or more cells, the cell is the smallest unit of life, and all new cells come from preexisting cells.

Back

cell theory

Front

An explanation of observations or events that is based on knowledge gained from many observations and investigations.

Back

Theory

Front

A cell that does not have a nucleus or other membrane-bound organelles.

Back

Prokaryotic

Front

Membrane-surrounded component of a eukaryotic cell with a specialized function.

Back

Organelle

Front

A cell that has a nucleus and other membrane-bound organelles.

Back

eukaryotic

Front

A living thing that is made up of only one cell.

Back

unicellular

Front

a living thing that is made up of two or more cells.

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multicellular

Front

an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.

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autotroph

Front

An organism that eats plants or animals for energy and nutrients.

Back

heterotroph