2. Is It Alive??

3. 1. Living Things Are Made Up of Cells Unicellular organisms are made of 1 cell Multicellular organisms are made of more than 1 cell Cells are the smallest unit of an organism that can be considered “alive” Requirements For Life Paramecium Dog

4. 2. Living Things Reproduce Sexual Reproduction: The mixing of genetic material from 2 members of the same species Asexual Reproduction: Offspring are genetically identical to the parent. No mixing of genetic material. Requirements for Life Sexual Reproduction Asexual Reproduction

5. 3.Living Things Are Based on a Universal Genetic Code All organisms store the complex information they need to live, grow and reproduce. All information is written in a molecule called DNA. Requirements For Life

6. 4.Living Things Grow and Develop During development a single egg divides again and again New cells can be created and differentiate to perform certain functions for the organism as time passes Requirements For Life Blue Oak Acorn Blue Oak Tree Sprouting

7. 5.Living Things Obtain and Use Energy Energy is obtained and used to grow, develop and reproduce Metabolism: The total sum of all chemical reactions in the body Requirements For Life

8. 6.Living Things Respond to Their Environment Living things respond to stimuli to improve their chances for survival A stimulus is a signal to which an organism responds

9. 7.Living Things Maintain a Stable Internal Environment Organisms need to keep conditions inside their bodies as constant as possible. This process is called homeostasis. Sweat to release heat Sensations of thirst and hunger Requirements For Life

10. 8.Taken as a Group, Living Things Evolve Basic traits individual organisms inherit from their parents usually do not change. Over many generations, groups of organisms typically evolve or change over time. Requirements For Life

11. Specimen #1: Feather Is It Alive?

12. Specimen #2: Fire Is It Alive?

13. Specimen #3: Bean Is It Alive?

14. Specimen #4: Yeast Is It Alive?

15. BONUS: Virus Is It Alive?