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Study of Biology

Study of Biology. What is Biology?. Biology is the study of all living things Living things are called organisms Organisms include bacteria, protists , fungi, plants, & animals. All Living Things Share Common Characteristics. Basic Unit is the Cell (Have order) They Reproduce

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Study of Biology

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  1. Study of Biology

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

  3. All Living Things Share Common Characteristics • Basic Unit is the Cell (Have order) • They Reproduce • All Based On Universal Genetic Code (DNA) • Grow & Develop

  4. Common Characteristics • Obtain & Use Materials & Energy (Metabolism) • Respond To Their Environment • Maintain A Stable Internal Environment • AS A GROUP, Living Things Evolve, That Is They Change Over Time

  5. Characteristics of Organisms

  6. All Organisms are made of Cells

  7. Cell Facts • Cells are the smallestliving unit of an organism • Cells are complex & highly organized

  8. Organisms are Grouped by their Number of Cells • Unicellular Organisms • Living Organism Made Up Of One Cell • Multicellular Organisms • Living Organism Made Up Of Many, Specialized Cells

  9. Organisms Reproduce to Pass on their Genetic Traits

  10. Sexual Asexual Reproduction Reproduction Two Types of Reproduction

  11. Cells Have a Genetic Code

  12. Genetic Code • DNA carries the genetic code for all organisms • All organisms contain DNA

  13. Organisms Grow & Develop

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

  15. Cells Require Food & Energy

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

  17. Metabolism • Cellular Respiration • Cells releasing the chemical energy stored in foods 6O2 + C6H12O6 6CO2 + 6H2O

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

  19. Maintaining Stable Internal Environment • Keeping The Internal Environment balanced = (Homeostasis) • Stable internal conditions of pH, temperature, water balance, etc.

  20. Living Things Evolve • Groups Of Organisms (Not Individuals) Change Over Time In Order To Survive Within Changing Environments. • Fossil records show changes in groups of organisms

  21. Life is Organized on Several Levels

  22. Levels • Biosphere • Ecosystem • Community • Population

  23. Levels • Organisms • Organ System • Organs • Tissues • Cells– life starts here • Organelles • Molecules • Atoms • Subatomic Particles

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