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Characteristics Of Life
Characteristics Of Life
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Biology characteristics of living things



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Biology characteristics

Biology characteristics of living things

  1. 1. Characteristics of Life
  2. 2. Section 1.1 What is Biology?
  3. 3. Biology <ul><li>The study of Life </li></ul>Bio logy (greek) Life Study of
  4. 4. Characteristics of Living Things <ul><li>Biologists have formulated a list of characteristics by which we can recognize living things </li></ul>
  5. 5. Living Things <ul><li>What are some examples of living things? </li></ul><ul><li>- Humans </li></ul><ul><li>-Plants </li></ul><ul><li>-bugs </li></ul><ul><li>● What about these things? </li></ul><ul><li>Rocks, bicycles, books </li></ul>
  6. 6. What Does it Mean to Be Alive? The Characteristics of Life
  7. 7. Life!!! All living things share some basic properties. <ul><li>Cellular Organization </li></ul><ul><li>Reproduction </li></ul><ul><li>Metabolism (Obtain and Use Energy) </li></ul><ul><li>Homeostasis </li></ul><ul><li>Heredity </li></ul><ul><li>Responsiveness </li></ul><ul><li>Growth and Development </li></ul><ul><li>Adapt Through Evolution </li></ul>
  8. 8. All Living Things are Made Up of Cells Unicellular Organisms <ul><li>Entire organism is made up of one single cell </li></ul><ul><li>Bacteria and protists </li></ul>Cells are basic structural units of life. Smallest unit capable of all life functions. Cells are the building blocks of all organisms = living things. Two types of cells are: Multicellular Organisms <ul><li>The organism is made up of many cells </li></ul><ul><li>Cells have specialized functions within the organism </li></ul>
  9. 9. Cells
  10. 10. UniCellular
  11. 11. MultiCellular
  12. 12. All Living Things Reproduce Reproduction is the process of producing new organisms of the same type. Two types of reproduction Asexual Reproduction <ul><li>A single parent organism reproducing by itself </li></ul>Sexual Reproduction <ul><li>Two different parent organisms contribute genetic information </li></ul><ul><li>Involves the combination of male and female sex cells </li></ul>
  13. 13. Asexual
  14. 14. Sexual: a new genetic combination
  15. 15. All Living Things Obtain and Use Energy Living organisms need energy to grow, develop, repair damage, and reproduce
  16. 16. Anabolism The process of building up complex substances from simpler substances <ul><li>Building up cells and cellular components </li></ul><ul><li>Photosynthesis </li></ul>
  17. 17. Catabolism The process of breaking down complex substances into simpler substances to release energy <ul><li>Digestion </li></ul><ul><li>Cellular Respiration </li></ul>
  18. 18. Metabolism The total of all chemical reactions in an organism <ul><li>Anabolism + Catabolism = Metabolism </li></ul>
  19. 19. A stable state of conditions in the body that are necessary for life <ul><li>Body temperature </li></ul><ul><li>Blood volume </li></ul><ul><li>pH balance </li></ul><ul><li>Water balance </li></ul>All Organisms Maintain Homeostasis
  20. 20. Stable Interior
  21. 21. Even though exterior conditions are changing
  22. 22. All Organisms Pass Along Hereditary Traits Genes carry hereditary information Genes are composed of DNA Heredity is the reason children resemble their parents Mutations change DNA code and can be passed from generation to generation
  23. 23. All Living Things Respond to Their Environment <ul><li>Organisms react to stimuli: </li></ul><ul><li>Light </li></ul><ul><li>Temperature </li></ul><ul><li>Odor </li></ul><ul><li>Sound </li></ul><ul><li>Gravity </li></ul><ul><li>Heat </li></ul><ul><li>Water </li></ul><ul><li>Pressure </li></ul>An example is a plant’s leaves and stems growing toward light
  24. 24. All Living Things Grow Growth means to get bigger in size
  25. 25. All Living Things Develop Development involves a change in the physical form or physiological make-up of an organism - An example would be how a frog is conceived and born. - A frog begins as a single cell in a fertilized egg and then grows into a tadpole and eventually into a fully grown frog.
  26. 26. Development
  27. 27. All Living Things Adapt to Their Environment Through Evolution Adaptation <ul><li>A process that enables organisms to become better suited to their environment </li></ul><ul><li>Species obtain adaptations through evolution over great periods of time </li></ul>
  28. 28. An Example of Adaptation Desert plants have succulent waxy leaves and stems to store water and reduce water loss
  29. 29. Living things adapt and evolve
  30. 30. Resources (sorting) (movie) (movie w/ song) (note and voice)