1. UNIT 1 CHARACTERISTICS OF LIFE

2. Unit 1 - Outline Describe the characteristics of living things
Explain the role of homeostasis
Compare and contrast a prokaryotic cell with a eukaryotic cell
Compare plant and animal cells
State the roles of the cells organelles
Describe the relationship of the cell membrane and the cell wall to osmosis
Compare sexual and asexual reproduction and the benefits of each
Demonstrate the use of the microscope, magnification, and lab drawings

3. CHARACTERISTICS OF LIFE
ALL LIVING THINGS:
Organized -are made up of one or more units called cells
Reproduce
Grow & develop
Obtain & use energy
Respond to their living environment
Homeostatic
Adapted

4. Living things are organized made up of cells
Unicellular = one celled organism
Multicellular = hundreds to trillions of cells working together

5. Living things Reproduce
Asexual Reproduction: single organism reproduces without the aid of another
Sexual Reproduction: two cells from different individuals unite to produce the first cell of the new individual

6. Living things Grow and Develop
Most living things go through a cycle of change called development
Then comes aging where reproduction stops
lastly inevitably comes death which is also a process that separates living from non-living things

7. Living things obtain and use energy
Anabolism: synthesis of complex substances from simpler ones
Photosynthesis in plants
Catabolism: breakdown of complex substance to simple
digestion in animals
Metabolism: sum of anabolism and catabolism

8. Living things Respond to their Environment
The ability of living things to respond to stimulus is called irritability

9. Homeostatic
Homeostasis: organisms ability to maintain constant/stable conditions suitable for life

10. SECTION REVIEW
1. Give an example of each of the characteristics of living things and give evidence for each 2. Compare and contrast sexual and asexual reproduction. What are the positives and negatives of both? 3. Define Metabolism in terms of catabolism and anabolism 4. Give an example of a non-living thing that satisfies each of the characteristics of life. Does any non-living thing have all the characteristics of life?