Levels of Organization for Life

1. 9. Organism

1.1. Unicellular, multicellular, microorganisms.

1.2. Ex. humans

1.3. A living thing.

2. 1. Atoms

2.1. They form together to make molecules

2.2. Make up everything in the universe

2.3. Smallest unit of matter

3. 3. Macro molecule

3.1. Come together to form organelles

3.2. Ex. lipids

3.3. Usually made of 1000 atoms or more

4. 5. Cells

4.1. Smallest units that have characteristics of life

4.2. The human body has about 100 trillion cells

4.3. They are the basic units of structure of all living things

5. 7. organs

5.1. Made up of different kinds of tissues

5.2. Organs are made up of tissue

5.3. Ex. heart

6. 2. Molecules

6.1. Combine together to form macromolecules

6.2. When more than one element forms together.

6.3. Water is a molecule

7. 4. Organelles

7.1. Tiny organ like structures inside of a cell.

7.2. Can not live outside of cells

7.3. Ex. vacuoles, Ribosomes, and mitochondria.

8. 6. tissues

8.1. Similar cells that have the same job

8.2. Four major types of tissue in the body: Muscle, epithelial, Nervous, and connective tissue.

8.3. Bone tissue, lung tissue, stomach tissue.

9. 8. Organ system

9.1. Ex: respiratory and cardiovascular

9.2. 11 major systems in the body

9.3. Two or more organs must come together to make organ system