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Organization of Living things

Atom - molecule - macromolecule - organelle - cell - tissue - organ - organ system - organism

Atom - the smallest particle of an element that has the chemical properties of that element. (NOT ALIVE)

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Cell - the smallest unit of life able to perform the basic functions of life.

 

Molecule - a group of atoms that are held together by covalent bonds so they move as a single unit (NOT ALIVE)

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Organ - a structure of an animal that is made up of different tissues working together to perform a particular function. 

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Organ system - a group of organs that together perform a function that helps the body meet its needs for energy and materials. 

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Organism - an individual living thing, made up of one or more cells, that it capable of growing and reproducing. 

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Tissues- a group of similar cells that are organized to do a specific job. 

Vocabulary 

Essential question - 

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1. How are living things organized? Living things are organized from the most basic structure, the atom, to a more complex network of systems within an organism. The atom is the basic unit that makes up all matter. Cells are made of atoms. Tissues are made from cells. Organs are made from tissues. Organs systems are made of several organs working together so the body can maintain homeostasis.  An organism are all the pieces coming together to create the whole. 

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