Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
BIOLOGY AS A SCIENCE<br />CHAPTER 1<br />
Process which produces a body of knowledge about nature<br />Sciences<br />	1.  Physical Sciences<br /><ul><li>Chemistry
Physics
Earth  and Space 			</li></ul>	2.  Biological Sciences<br /><ul><li>Zoology
Botany
Others</li></ul>Technology is the application of scientific knowledge to real world problems <br />1-1 SCIENCE<br />
Biology<br />	1.  Defined<br /><ul><li>Bio -
ology -
The study of living things
Organisms			</li></ul>	2.  Importance <br /><ul><li>Food  (production, preparation,  spoilage)
Pets
Plants (house plants, yard, harmful plants)
Child care
Disease
Pests
Heredity		</li></ul>	3.  Careers <br /><ul><li>Wellspan is the largest employer in the county</li></li></ul><li>Observatio...
Tools extend our powers of observation		</li></ul>	2.  Facts are confirmed observations<br />	3.  Data<br /><ul><li>Record...
Upcoming SlideShare
Loading in …5
×

Biology As A Science

1,987 views

Published on

Published in: Education, Technology
  • Be the first to comment

  • Be the first to like this

Biology As A Science

  1. 1. BIOLOGY AS A SCIENCE<br />CHAPTER 1<br />
  2. 2. Process which produces a body of knowledge about nature<br />Sciences<br /> 1. Physical Sciences<br /><ul><li>Chemistry
  3. 3. Physics
  4. 4. Earth and Space </li></ul> 2. Biological Sciences<br /><ul><li>Zoology
  5. 5. Botany
  6. 6. Others</li></ul>Technology is the application of scientific knowledge to real world problems <br />1-1 SCIENCE<br />
  7. 7. Biology<br /> 1. Defined<br /><ul><li>Bio -
  8. 8. ology -
  9. 9. The study of living things
  10. 10. Organisms </li></ul> 2. Importance <br /><ul><li>Food (production, preparation, spoilage)
  11. 11. Pets
  12. 12. Plants (house plants, yard, harmful plants)
  13. 13. Child care
  14. 14. Disease
  15. 15. Pests
  16. 16. Heredity </li></ul> 3. Careers <br /><ul><li>Wellspan is the largest employer in the county</li></li></ul><li>Observation<br /> 1. Process of gathering information<br /><ul><li>Use our senses
  17. 17. Tools extend our powers of observation </li></ul> 2. Facts are confirmed observations<br /> 3. Data<br /><ul><li>Recorded observations
  18. 18. Words, Numbers, Graphs, Sketches, Notes, Video, Audio, Photographs</li></ul>Interpretation<br /> 1. Explanation of the facts<br /> 2. Not always correct<br />1-2 SEARCH FOR KNOWLEDGE<br />
  19. 19. INTERPRETATION<br />
  20. 20. INTERPRETATION<br />
  21. 21. Logical method of problem solving<br />No one set method<br />Basic Steps<br /> 1. PROBLEM<br /> 2. RESEARCH<br /> 3. HYPOTHESIS<br /> 4. EXPERIMENT<br /> 5. CONCLUSION<br />Subject to verification<br />1-3 THE SCIENTIFIC METHOD<br />
  22. 22. Variables are factors that can affect the outcome of an experiment<br />1-4 CONTROLED EXPERIMENTS<br />EXAMPLE: Plant Growth<br />
  23. 23. Two groups<br /> 1. CONTROL GROUP<br /><ul><li>Group under normal conditions
  24. 24. All variables are controlled
  25. 25. Group used for comparison </li></ul> 2. EXPERIMENTAL GROUP<br /><ul><li>Group being tested
  26. 26. All variables are controlled EXCEPT ONE
  27. 27. Tells if the factor being tested actually affected the outcome of the experiment</li></ul>Groups must be large for valid results<br /> 1. Excludes individual differences<br /> 2. All variables are controlled <br />
  28. 28. LAWS<br /> Statements about events that always<br /> occur in nature<br />Sir Isaac Newton – The Law of Gravity<br />Does not explain why<br />THEORIES<br /> Best explanation science has to offer of why things occur in nature <br />Have held up over long periods of time<br />Sir Charles Darwin – Theory of Evolution<br />Laws and Theories<br />Subject to revisions<br />Can be used to make predictions<br />1-5 LAWS and THEORIES<br />
  29. 29. Compare sets of numerical data<br />Each number is a variable<br />Types of variable<br /> 1. INDEPENDENT VARIABLE<br /><ul><li>Placed on the X-AXIS of Graph
  30. 30. Set by the person conducting the experiment</li></ul> 2. DEPENDENT VARIABLE<br /><ul><li>Placed on the Y-AXIS of Graph
  31. 31. Data collected from the experiment
  32. 32. Depends on the independent variable</li></ul>1-6 GRAPHS<br />
  33. 33. GRAPH of LION GROWTH<br />
  34. 34. TITLE: Growth of Lions<br />100<br />Dependent Variable on Y-AXIS Vertical<br /><ul><li> Axis range depends on highest</li></ul> and lowest values of data<br /><ul><li> Graphs do not need to start at</li></ul> zero<br /><ul><li> Each block must equal the</li></ul> same amount<br /><ul><li> Spread your data over the </li></ul> available space<br /><ul><li> Connect points with a smooth</li></ul> line curve<br />80<br />MASS (kg)<br />60<br />□ = 10 kg<br />40<br />20<br />Independent Variable on X-AXIS Horizontal<br />TIME (yrs)<br />1<br />2<br />3<br />□ = 2 months<br />
  35. 35. The Microscope<br /> 1. Tool used to study small objects (microscopic) <br /> 2. Main Functions<br /><ul><li>Magnification</li></ul>To enlarge<br />E.g. 5X<br /><ul><li>Resolution</li></ul>Sharpness (detail)<br />Ability to define space<br />Limit of the eye is 0.1 mm<br />1-7 MICROSCOPES<br />
  36. 36. Types of Microscopes<br /> 1. Light Microscope<br /><ul><li>SIMPLE MICROSCOPE</li></ul>Uses one lens<br />Magnifying Glass<br /><ul><li>COMPOUND MICROSCOPE</li></ul>Uses TWO lenses<br />Total Magnification<br />
  37. 37. Field of View<br /><ul><li>What you see
  38. 38. The greater the magnification the less you see</li></ul>Microscopic Measurement<br /><ul><li>Micrometer (µm) </li></ul> 1000 µm = 1 mm<br /><ul><li>Nanometer (nm)</li></ul> 1000 nm = 1 µm<br />20X<br />4X<br />
  39. 39. 2. Electron Microscopes<br /><ul><li>TRANSMISSION ELECTRON MICROSCOPE (TEM)</li></ul>Sends electrons through a specimen<br />Magnifications of 200,000x plus<br />Limit of light microscope is 2000x<br /><ul><li>SCANNING ELECTRON MICROSCOPE (SEM)</li></ul>Sends electrons across a specimen<br />Magnifications of 100,000x but 3D<br /><ul><li>Major Limitation is not being able to view living things</li></ul>Can’t survive preparation<br />Can’t exist in a vacuum<br />

×