1. Ch. 1 Characteristics of Life

2. 1. Cellular Organization 2. Use Energy for Metabolism 3. Growth and Development 4. Respond to Stimuli 5. Homeostasis 6. Reproduce 7. Heredity

3. Cellular Organization A cell is the smallest unit capable of all life functions Levels of Organization: Cells  Tissues  Organs  Organ Systems Organism

4. A B C

5. Use Energy  Energy is needed to run life sustaining chemical reactions, like movement, growth, and repair.  Metabolism is the sum of all these reactions.

6. Metabolism Metabolism manages the energy and material resources in a cell. Metabolism manages the energy and material resources in a cell. There are two basic types. There are two basic types.

7. Catabolic Break down large molecules Break down large molecules Releases/ Stores energy Releases/ Stores energy For example, cellular respiration is the process that breaks down sugar molecules into small energy storing molecules For example, cellular respiration is the process that breaks down sugar molecules into small energy storing molecules

8. Anabolic Build larger molecules Uses energy For example, protein synthesis is the building of large proteins from smaller molecules called amino acid.

9. Growth and Development Growth: increase of living matter (making more cells) Development: change into mature adult

10. Response to Stimuli Stimulus: a change in the environment Organism respond and react to changes around them For example, animals run from predators. Think of stimuli you react to.

13. Homeostasis Homeostasis: to maintain the same internal environment in response to changes in the external environment What internal changes does your body regulate?

14. Homeostasis Some examples: temperature, water and salt levels, blood sugar levels

15. Reproduction Process by which organisms make more of their own kind Necessary for the survival of the species Asexual and sexual

16. Heredity Organisms pass hereditary information in genes to their offspring. Genes are encoded in the molecule called DNA Allows for adaptations and changes through time

17. Tell what characteristics of life each item has. SeedVolcano Chicken egg Bread dough Moldy bread A branch off a tree

18. DO NOW Think of a characteristic of life that a nonliving object might display and explain what it is. Think of a characteristic of life that a nonliving object might display and explain what it is.