1. Biology Dr. Romano

2.  http://www.youtube.com/watch?v=9D XAauzqjb0 http://www.youtube.com/watch?v=9D XAauzqjb0

3.  1. Living things are composed of cells. Each cell has all it needs to be self sufficient.  In some living things, cells are specialized for different functions. Example: a muscle cell  2. Living things have a universal genetic code: DNA and RNA.  3. Living things use energy for maintenance and growth. Some living things can use the energy directly from the sun.

4.  4. Living things grow and develop. Cells divide and make more cells. Individual cells grow/enlarge.  5. Living things can reproduce through asexual and sexual reproduction. This allows survival of the species.  6. Living things can respond to their environment. This is called a stimulus-response. Behavior is a complex set of responses.

5.  7. Living things have the ability to maintain homeostasis: a stable internal environment in each cell.  8. Living things adapt to their environment. This is important for species’ survival. This is called “Evolution.”  Living things have levels of organization. ◦ Atoms/Molecules  Cells  Tissues  Organs  Organ Systems  Organisms

7.  Feeding/Nutrition/Digestion  Respiration/Breathing  Movement/Locomotion  Excretion  Respond to Environment  Growth and Repair  Reproduction  Sum total of all processes in living things is called Metabolism

8.  1.Do all living things have all of the characteristics of life? If your answer is no, give an example.  2.Name some non-living thing that uses energy.  3.Name some non-living thing that grows.