All terms in this list:

cell: The smallest unit of an organism that carries on the functions of life

organism: Any living thing

binomial nomenclature: The two-word naming system for organisms

phylogeny: The evolutionary history of an organism

homeostasis: The regulation of an organism's internal conditions despite changes in its environment

kingdom: The largest group that organisms are categorized into

ribosome: Small structures on which cells make their own proteins

cell wall: Tough, rigid outer coverings that protect plant cells and give them shape

chloroplast: Green organelles where plant cells make their own food

mitochondrion: These organelles release energy for the ce11

cell membrane: The organelle that directs all cellular activity. The protective layer surrounding every cell

endoplasmic reticulum: A series of folded membranes in which materials can be processed and moved around inside the cell

organ systems: A group of organs working together to perform a certain function

tissue: A group of similar cells that work together to do one job

organelle: Structures inside the cytoplasm of eukaryotic cells

cell theory: States that all organisms are made up of cells, the cell is the basic unit of life, and that cells come from cells

cytoplasm: A gelatin-like substance that constantly flows inside the cell membrane

Golgi bodies: Stacked, flattened membranes that sort proteins and other cellular materials and packages them in vesicles

organ: A structure made up of two or more types of tissue that work together