1. BIOLOGY AND THE CHARACTERISTICS OF LIVING THINGS

2. Bell Ringer Part 1 On the next open page in your journal write the title Characteristics of Life. Write the following statement and bullet point at least 8 things that you think could accurately fill in the blank. In order for something to be alive, it must:_________________

3. Bell Ringer Part 2 Now make a table using the following list to fill the left side column. Using your ideas for what is living, determine if the items on the list are living or non living: tree, rock, boy, fire, wind, rabbit, cloud, feather, grass, seed, egg, bacteria, cell, molecule, sun, mushroom, potato, detached leaf, butterfly, pupae, fossil, hibernating bear, mitochondria, river

4. What is Biology ? Study of life Helps us understand the living world How do we know if something is living?

5. ALL LIVING THINGS : 1. Are made of cells 2. Can reproduce 3. Have a genetic code 4.Grow and develop 5.Obtain/use materials and energy 6.Respond to environment 7.Maintain homeostasis 8.Change over time

6. 1.Made of cells A cell is a collection of living matter enclosed by a membrane Smallest living unit of a living organism

7. Sexual reproduction –Formation of an organism from the union of gametes from two parent organisms. Asexual reproduction –Formation of an organism genetically identical to the parent that does not involve the union of a sperm and an egg. 2. Can Reproduce

8. 3. Have a genetic Code The genetic code with minor variations determines the inherited traits –DNA –RNA

9. 4. Grow and Develop Grow and/or develop during part of their lives –Increase in size –Develop over time in different physical stages

10. 5. Obtain/Use Materials and Energy Metabolism –Build up and break down of materials as it carries out life processes –i.e. photosynthesis, cellular respiration Store and use energy

11. 6. Respond to Environment Stimulus –Signal to which an organism responds External--Outside of the organism (i.e. temperature, light) Internal--Within the organism (i.e. blood sugar level)

12. 7. Maintaining Homeostasis Homeostasis — balance within an organism Example: * sweating in to cool down * your body can regulate blood sugar.

13. 8. Evolve Change over long periods of time Organisms evolve in order to adjust to the environment.