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28 1 levels of organization Biology - IX (FAZAIA)

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28 1 levels of organization Biology - IX (FAZAIA)

  1. 1. 28.1 Levels of Organization A. Levels of Structural OrganizationA. Levels of Structural Organization AtomAtom MoleculeMolecule CellCell TissueTissue OrganOrgan Organ SystemOrgan System OrganismOrganism
  2. 2. 28.1 Levels of Organization
  3. 3. 28.1 Levels of Organization ExamplesExamples:: ≈ carboncarbon ≈ PhospholipidPhospholipid ≈ nerve cellnerve cell ≈ nervous tissuenervous tissue ≈ brainbrain ≈ nervous systemnervous system ≈ humanhuman AtomAtom MoleculeMolecule CellCell TissueTissue OrganOrgan Organ SystemOrgan System OrganismOrganism
  4. 4. 28.1 Levels of Organization 1. Atoms combine to form molecules1. Atoms combine to form molecules Atoms Molecule
  5. 5. 28.1 Levels of Organization 2. Molecules form cells2. Molecules form cells Molecules Cell
  6. 6. 28.1 Levels of Organization a.a. Specialized cells develop from aSpecialized cells develop from a single zygote.single zygote. • Organisms are made up of specializedOrganisms are made up of specialized cellscells.. red blood cell nerve cell
  7. 7. 28.1 Levels of Organization • Zygotes first divide into embryonic stem cellsZygotes first divide into embryonic stem cells.. • Stem cells develop inStem cells develop in two stages.two stages. – determination, ordetermination, or committing tocommitting to become one cell typebecome one cell type – differentiation, ordifferentiation, or acquiring specializedacquiring specialized structures andstructures and functionsfunctions
  8. 8. 28.1 Levels of Organization 3. Cells form tissues3. Cells form tissues Similar cells with aSimilar cells with a common functioncommon function form tissuesform tissues • There are 4 basicThere are 4 basic tissue types:tissue types: • EpithelialEpithelial • NervousNervous • MuscularMuscular • ConnectiveConnective
  9. 9. 28.1 Levels of Organization cell 4. Specialized cells function together in4. Specialized cells function together in tissues, organs, organ systems, and thetissues, organs, organ systems, and the whole organism.whole organism. • Specialized cells perform specificSpecialized cells perform specific tasks.tasks. • Tissues are groups ofTissues are groups of similar cells workingsimilar cells working together.together. tissue – epithelial tissueepithelial tissue – connectiveconnective tissuetissue – muscle tissuemuscle tissue – nervous tissuenervous tissue
  10. 10. 28.1 Levels of Organization 5.5. Tissues form organsTissues form organs • Two or more tissue types formTwo or more tissue types form an organan organ An organ is a structure thatAn organ is a structure that performs a specific functionperforms a specific function for the bodyfor the body
  11. 11. 28.1 Levels of Organization 66. Organs form Organ Systems. Organs form Organ Systems • A group of organs whichA group of organs which work together for a commonwork together for a common purpose is an organ systempurpose is an organ system Brain, Spinal Cord, etc.Brain, Spinal Cord, etc. Nervous SystemNervous System
  12. 12. 28.1 Levels of Organization B. Body SystemsB. Body Systems 1. Integumentary System1. Integumentary System Skin is the only organSkin is the only organ  Protects from injuryProtects from injury  Regulates body temperatureRegulates body temperature  Receptors for temperature, pain,Receptors for temperature, pain, and pressureand pressure
  13. 13. 28.1 Levels of Organization 2. Skeletal System2. Skeletal System Bones, cartilage, ligaments, andBones, cartilage, ligaments, and jointsjoints  Supports bodySupports body  ProtectionProtection  Storage for minerals (calcium)Storage for minerals (calcium)
  14. 14. 28.1 Levels of Organization 3.3. Muscular SystemMuscular System Muscles contract (shorten)Muscles contract (shorten) to cause movementto cause movement • Skeletal muscles are large,Skeletal muscles are large, fleshy, and attached to bonefleshy, and attached to bone
  15. 15. 28.1 Levels of Organization 4. Nervous System4. Nervous System Brain, spinal cord,Brain, spinal cord, nerves, & sensorynerves, & sensory receptorsreceptors • Responds toResponds to irritants or stimuliirritants or stimuli
  16. 16. 28.1 Levels of Organization 5. Endocrine System5. Endocrine System Releases hormones to control:Releases hormones to control:  GrowthGrowth  ReproductionReproduction  Food useFood use
  17. 17. 28.1 Levels of Organization 6. Circulatory System6. Circulatory System Made of 2 organ systemsMade of 2 organ systems::  Cardiovascular System:Cardiovascular System: - Heart and blood vesselsHeart and blood vessels - Transport oxygen, etc.Transport oxygen, etc.  Lymphatic System:Lymphatic System: - Cleanses blood, immunityCleanses blood, immunity
  18. 18. 28.1 Levels of Organization 7. Respiratory System7. Respiratory System • Nasal passages,Nasal passages, pharynx, larynx,pharynx, larynx, trachea, bronchi, lungstrachea, bronchi, lungs Supplies body withSupplies body with oxygenoxygen Removes carbon dioxideRemoves carbon dioxide
  19. 19. 28.1 Levels of Organization 8. Digestive System8. Digestive System • Mouth, oral cavity, pharynx,Mouth, oral cavity, pharynx, esophagus, stomach, smallesophagus, stomach, small intestine, large intestine,intestine, large intestine, rectumrectum Breaks down food andBreaks down food and delivers nutrients todelivers nutrients to blood for cells in theblood for cells in the bodybody
  20. 20. 28.1 Levels of Organization 9. Urinary System9. Urinary System • Kidneys, ureters, bladder, andKidneys, ureters, bladder, and urethraurethra • Removes Nitrogen-containingRemoves Nitrogen-containing wastes from the blood andwastes from the blood and flushes them from the body influshes them from the body in urineurine Regulates:Regulates: – Water balanceWater balance – Salt balanceSalt balance – pH (acid-base) balancepH (acid-base) balance
  21. 21. 28.1 Levels of Organization 10. Reproductive System10. Reproductive System Functions to produce offspringFunctions to produce offspring • Male testes produce spermMale testes produce sperm  Male Structures: scrotum, penis,Male Structures: scrotum, penis, accessory glands, duct systemaccessory glands, duct system • Female ovaries produce eggsFemale ovaries produce eggs  Female structures: uterine tubes,Female structures: uterine tubes, vagina, uterus (where fetus develops)vagina, uterus (where fetus develops)
  22. 22. 28.1 Levels of Organization All of the organ systems form the organismAll of the organ systems form the organism
  23. 23. 28.1 Levels of Organization Activity – Due end of the period Thursday.Activity – Due end of the period Thursday. • You are going to create a mini poster with your tableYou are going to create a mini poster with your table partner. You will make them for 2 organ systems.partner. You will make them for 2 organ systems. • Layout of Poster (Follow this layout, or lose points…)Layout of Poster (Follow this layout, or lose points…) Major Organ System: (Name organ here) Major Tissues & Organs Primary Function ____________________ ______________ ____________________ ______________ ____________________ ______________ *Must have 2-3 pictures*
  24. 24. 28.1 Levels of Organization Q1: DEFINE SUB ATOMIC PARTICLES?Q1: DEFINE SUB ATOMIC PARTICLES? Q2: WHAT ARE BIOMOLECULES?Q2: WHAT ARE BIOMOLECULES? Q3: DEFINE SPECIES?Q3: DEFINE SPECIES? Q4: DEFINE ORGAN AND ORGAN SYSTEM?Q4: DEFINE ORGAN AND ORGAN SYSTEM? Q5: DEFINE TISSUES?Q5: DEFINE TISSUES? Q6: GIVE AN EXAMPLE OF COMMUNITY?Q6: GIVE AN EXAMPLE OF COMMUNITY?

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