1. Characteristics of Living Things and Components of Life April, 2011

2. Six Characteristics of Living Things Living things are made of 1 or more cells the smallest unit can perform all life functions has all the materials necessary for life

3. Six Characteristics of Living Things Living things sense and respond to change Stimulus-anything that causes a reaction or change in an organism Homeostasis-maintaining a constant internal state in a changing environment

4. Six Characteristics of Living Things Living things reproduce Asexual reproduction - single parent produces identical offspring Sexual reproduction - two parents produce offspring

5. Six Characteristics of Living Things Living things have DNA DNA- controls structure and function of cells Heredity - passing of traits from one generation to the next

6. Six Characteristics of Living Things Living things use energy Metabolism - total of all the chemical activities the organism performs

7. Six Characteristics of Living Things Living things grow and develop - all living things get larger and change as they grow (unicellular organisms divide)

8. Necessities of Life Water - 70% of our bodies are water Air - oxygen and carbon dioxide used by a number of organisms Shelter - some organisms stay in one place, others migrate Food - used for energy

9. Who Eats What? Producers - plants use light of sun to make sugar glucose from water and carbon dioxide Consumers - eat plants and other animals, cannot make their own food Decomposers - break down the nutrients in dead plants and animals

10. Organic Molecules Proteins - made of amino acids, build structures, do certain jobs, and speed up chemical reactions (enzymes) Carbohydrates - energy source and storage

11. Organic Molecules Lipids Phospholipids create the cell membrane Fats and oils-store energy for use at later time

12. Organic Molecules ATP- adenosine triphosphate-energy molecule in cells, made when cells break down glucose (sugar) from plants Nucleic Acids- DNA and RNA; responsible for the creation of proteins that control cell function

13. Diagram of how ATP is made in cells through cellular respiration Explanation of protein synthesis, the true function of DNA and RNA