1. 1 Study of Biology copyright cmassengale

2. 2 What is Biology? Biology is the study of all living things Living things are called organisms Living things are called organisms Organisms include bacteria, protists, fungi, plants, & animals copyright cmassengale

3. 3 Characteristics of Organisms copyright cmassengale

4. 4 All Organisms are made of Cells copyright cmassengale

5. 5 Facts About Cells Cells are the smallest living unit of an organism ALL organisms are made of cells copyright cmassengale

6. 6 Organisms are Grouped by their Number of Cells Unicellular Organisms Unicellular Organisms -Organism Made Up Of One Cell Multicellular Organisms Multicellular Organisms –Organism Made Up Of Many, Specialized Cells –Cells differentiate or becomes specialized to perform a specific function copyright cmassengale

7. 7 Organisms Reproduce to Pass on their Genetic Traits copyright cmassengale

8. 8 Two Types of Reproduction Sexual Reproduction Involves 2 parents Offspring DIFFERENT from parents copyright cmassengale

9. 9 Two Types of Reproduction Asexual Reproduction Involves a single organism or cell Cell divides Offspring IDENTICAL to parent copyright cmassengale

10. 10 Cells Have a Genetic Code copyright cmassengale

11. 11 Genetic Code DNA (deoxyribose nucleic acid) carries the genetic code for all organisms All organisms contain DNA DNA codes for the proteins that make up cells & do all the work copyright cmassengale

12. 12 Organisms Grow & Develop copyright cmassengale

13. 13 Growth & Development Organisms grow by producing MORE CELLS & by cell ENLARGEMENT Organisms develop as they mature into an adult organism copyright cmassengale

14. 14 Cells Require Food & Energy copyright cmassengale

15. 15 Food Requirements Autotrophs can make their own food Heterotrophs can NOT make their own food They must consume other organisms copyright cmassengale

16. 16 Metabolism Sum of all the chemical reactions in an organism All require energy Sunlight is the ultimate energy for life on Earth copyright cmassengale

17. 17 Organisms Respond to Stimuli Organisms Respond to stimuli (Temperature, Water, Food Supplies, etc.) In Order To Survive & Reproduce copyright cmassengale

18. 18 Homeostasis Keeping The Internal Environment (Homeostasis) Of The Cell or Organism Within The Ranges Required For Life Stable internal conditions of pH, temperature, water balance, etc. copyright cmassengale

19. 19 Living Things Evolve Groups Of Organisms (Not Individuals) Change Over Time In Order To Survive Within Changing Environments. copyright cmassengale

20. 20 Life is Organized on Several Levels copyright cmassengale

21. 21 Levels AtomsMoleculesOrganelles Cells – life starts here TissuesOrgansSystemOrganism copyright cmassengale