Levels of Organization for Life

1. Cells

1.1. Smallest units that have characteristics of life.

1.2. 100 trillion cells in the human body.

1.3. Cells are basic units of all living things.

2. Macromolecule

2.1. Come together to form organelles.

2.2. Ex. Lipids or fat

2.3. Usually made of 1000 atoms or more.

3. Organs

3.1. Made up of different kinds of tissue.

3.2. Organs are made up of tissue

3.3. Ex. Heart

4. Organism

5. Atoms

5.1. Makes up everything in the universe.

5.2. They bond together to form molecules.

5.3. Smallest unit of matter.

6. Organelles

6.1. Organelles- tiny organ like structures inside of a cell.

6.2. Organelles cannot live outside of cells.

6.3. Ex. Vacuoles, ribosome and mitochondria.

7. Molecule

7.1. Chemical grouping and molecules can combine with other molecules and more atoms to form macromolecules.

7.2. When more than one element forms together

7.3. Water is a molecule

8. Tissues

8.1. They have to be similar cells and complete the similar job.

8.2. 4 major types in the body; connective, muscle, nervous, and epithelial.

8.3. Bone tissue, lung tissue, and stomach tissue.

9. Organ System

9.1. 11 major systems in the body.

9.2. Two or more organs come together to form a job.

9.3. Example: respiratory and cardiovascular.