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Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
Properties of Living things
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Properties of Living things

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  • 1. Properties of Living Things
  • 2. Biological OrganizationBiology is the study of life (living things) Biosphere Ecosystem Community Population Organism Organ System Organ Tissue Cell Molecules/Atoms/Ions
  • 3. Hierarchy of Life activity At your lab tables, work to complete the pyramid activity given to you by your teacher The main idea: life is organized into levels of organization and study from small (cell) to big (biosphere)
  • 4. Three Domains of Life p. 9 Prokaryotic cells Eukaryotic cells Contain no nucleus  Contain a nucleus to Are divided into two protect their DNA subgroups:  Are bigger and more Archaea (the ancient complex than bacteria, now found near prokaryotic cells deep sea vents, volcanoes)  Include plants, animals, Bacteria (those that live in fungus, and protists the same places we do now)
  • 5. The Three Domains of Life BacteriaArchaebacteria (Eubacteria) Eukaryotes (prokaryotes) (prokaryotes)
  • 6. Domains of Life review Now its your turn: in your Science Sketchbook (SSB), draw a Venn diagram outlining the similarities and differences between the three domains Domain Archaea Domain Domain Eukarya Bacteria
  • 7. Characteristicsof Living ThingsCellular Organization Metabolism Homeostasis Reproduction Heredity
  • 8. Cellular Organization All living things are made up of cells.  One celled organisms are known as unicellular  Organisms that contain more than one cell are called multicellular.  Cells with a nucleus are called eukaryotes  Cells without a nucleus are called prokaryotes
  • 9. Metabolism This term refers to the total number of chemical reactions that take place in an organism.  All chemical reactions require energy. They include breaking down food, building muscle and bone, and making enzymes and other things the body needs to function  All fuel comes from the sun‟s energy, which is converted into sugar compounds by plants (and some bacteria) which we then eat as food.
  • 10. Homeostasis This term refers to a “steady state.” All living things strive to maintain a balanced state for optimum health and growth.  Temperature regulation is a good example of how living things have developed mechanisms to maintain a steady state (sweating when we are hot, shivering when we are cold, etc.).
  • 11. Reproduction Living things produce offspring in order to ensure the survival of the species (more on this later!).  Reproduction can either be sexual (requiring a partner‟s DNA) or asexual (no partner DNA needed)
  • 12. Heredity All living things pass on their genes to their offspring  Genes are made up of short sections DNA and make up the directions that determine our traits  Think of genes as recipes in a cookbook. We each have our own set of recipes to make our specific traits
  • 13. Themes in Biology Biological Systems Cells Form & Function Reproduction & InheritanceInteraction with the Environment Energy & Life Regulation Adaptation & Evolution Biology & Society Scientific Inquiry
  • 14. Biological Systems Biological systems describe how life is organized It can refer to organ systems in our bodies or a variety of other systems in which individual parts work together toward a collective whole Systems thinking and research involves studying the parts as they work together rather than isolating a part to see how it functions in isolation For example, researchers now know that your genes alone do not determine traits; their expression is dependent upon the role of many other parts
  • 15. Cells Cells are the smallest form of living organism and are the basis for complex multicellular systems The basic cell structure is universal throughout the living world As our technology has improved, so has our understanding of the microscopic world
  • 16. Form & Function Form refers to the physical structures in an organism/cell Function refers to the job that physical structure does As the shape of a structure changes, so does its function
  • 17. Reproduction & Inheritance We inherit genes that direct our traits from our parents The process of inheritance and gene expression is complex and has multiple and diverse pathways This theme is one we will study in depth later on in the class 
  • 18. Energy & Life The energy in the food we eat comes from the sun Plants and other organisms with chloroplasts convert sunlight into sugar We take that sugar and convert into ATP, the energy currency of our cells
  • 19. Regulation Regulation refers to the way in which organisms maintain homeostasis Homeostasis is the „steady state‟ that allows systems to work at their optimum level Regulation is an essential part of all living systems
  • 20. Adaptation & Evolution The qualities of organisms that allow them to survive and reproduce in their environments are called adaptations Evolution is a major theme in biology and one that we will study in depth later in the year 
  • 21. Biology and Society This theme deals with  Some examples: how biology relates to  Global warming and our our everyday life „carbon footprints‟  Ethical decisions  Recycling  Legal cases  Genetic testing and  Political issues confidentiality (insurance, law enforcement) We will explore a variety  Reproductive science of issues related to this ethics issues theme throughout the year 
  • 22. Scientific Inquiry Scientific Inquiry is  Research a Subject  Pose a Questions another way of  Propose a feasible answer (the describing the Scientific hypothesis) Method  Create an experimental protocol  This is the system  Do an experiment scientists use and the  Collect data approach scientists take  Analyze data when studying a  Confirm/refute hypothesis biological question/issue  Draw broader conclusions  Investigate a related/addition question
  • 23. Themes Activity Your Ch. 1 Hwk sheet is due Friday, the day of our Ch. 1 exam. On it, be sure you are comfortable with the definition and examples for each theme (hwk question #3) Review your SSB for your comments on the Mark Dion tree large-scale installation and how the themes of biology relate to his work

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