Levels of Organization for Life

1. macromolecule

1.1. ontaining a very large number of atoms

1.2. Nucleic acids - a complex organic substance present in living cells. DNA, composed of nucleotide-a compound consisting of a nucleoside linked to a phosphate group

1.3. a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

2. organelles

2.1. 1/6 of earths energy is used by plants

2.2. first cells discovered

2.3. any of a number of organized or specialized structures within a living cell

3. cells

3.1. Cells are the basic building blocks of living things

3.2. human body is composed of trillions of cells,

3.3. the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane

4. organs

4.1. five vital organs that are essential for survival

4.2. 78 organs in human body

4.3. a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.

5. organism

5.1. can be made up of 1 cell

5.2. visible through microscope

5.3. an individual animal, plant, or single-celled life form.

6. atom

6.1. dense nucleus surrounded by a cloud of electrons,

6.2. the basic unit of a chemical element.

6.3. protons,neutrons,electrons

7. molecule

7.1. smallest unit compound

7.2. Molecules can have different shapes

7.3. atoms make up this

8. Tissues

8.1. 600 muscle tissue in body

8.2. any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products

8.3. tissue is usually made of cells and extracellular fibers that hold structures together

9. Organ system

9.1. The eye is an organ that is generally considered part of the nervous system

9.2. group of organs that work together as a biological system to perform one or more functions

9.3. Each does a particular job in the body, and is made up of certain tissues.