1. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Lectures by Chris C. Romero PowerPoint ® Lectures for Essential Biology, Third Edition – Neil Campbell, Jane Reece, and Eric Simon Essential Biology with Physiology, Second Edition – Neil Campbell, Jane Reece, and Eric Simon CHAPTER 1 Introduction: Biology Today

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6. We are living in a golden age of biology. –Modern biology is as important as it is inspiring, with exciting breakthroughs changing our very culture. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings

7. Figure 1.1

8. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Biology = the scientific (or measurable) study of life. So what is bio, bro?

9. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings The phenomenon we call life defies a simple, one-sentence definition.

10. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings WHAT IS LIFE?

11. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Figure 1.2 order Response to the environment reproduction evolutionEnergy utilization Growth and development Regulation 7 QUALITIES ALL LIFE MUST TO HAVE

12. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Organization all living things are organized

13. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Response to environment

14. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Reproduction Produce offspring similar to self Sometimes can mix genetic information

15. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Evolution

16. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Energy Use All living things require energy to do everything else Repair cells Move Grow

17. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Growth and development

18. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Regulation

19. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Is it / does it: ordered? respond to the environment reproduce? evolve? use energy? self-regulate? This computer YES NO YES

20. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Are trees alive Is your dog alive Is fire alive

21. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Biologists explore life at levels ranging from the biosphere to the molecules that make up cells. Life at Its Many Levels

22. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Country State County Town Block House Room of bricks Brick

23. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Figure 1.3 COMMUNITY

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25. Lectures by Chris C. Romero PowerPoint ® Lectures for Essential Biology, Third Edition – Neil Campbell, Jane Reece, and Eric Simon Essential Biology with Physiology, Second Edition – Neil Campbell, Jane Reece, and Eric Simon The Metric System

26. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings “Systeme International” Base 10 System Works for all units of measurement length, volume, time, and mass

27. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings length, volume, time, mass The Standard or English System is what you are used to using in the US. Here’s some examples: Length = Inches, feet, or Miles Volume = Cups, ounces, gallons Time = Seconds Mass = Pounds

28. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings length, volume, time, mass However, the Metric system is used for ALL sciences universally. Here’s some examples: Length = Meter (m) Volume = Liter (L) Time = Second (s) Mass = Gram (g)

29. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Easy to use Base 10 allows scientists to easily change units to make numbers more manageable How many days old are you? Easier to use years huh…

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34. LET’S CALL IT 1 ( SOMETHING METER ) Sometimes it becomes impractical to measure with cm or mm.. What about the big stuff? Well… 10 mm = 1 cm What can we do with 10cm? Think, think, think?

35. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings kilo- (k) hecto- (h) deka- (da) meter deci- (d) centi- (c) milli- (m) kangaroos hop down mountains during cold months meter (m) liter (l) gram(g)

36. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Fill in the boxes with the appropriate prefix and unit Kilo (k) hecto (h) deka (da) UNITS Meters (m) Liters (l) Grams (g) deci - (d) centi - (c) milli - (m)

37. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Examples: Q: 1.2hL = _______ dL 3 steps down to the right A: = 1,200.0 dL Q:340.2cg = ________ kg 5 steps up to the left A:0.003402 kg

38. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings THE SCIENTIFIC METHOD

39. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings The scientific method= a way to ask and answer scientific questions by making observations and doing experiments

40. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Although the exact wording may be slightly different the “big picture” is always the same

41. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Figure 1.18 YOU NOTICE SOMETHING YOU WONDER WHY YOU MAKE AN EDUCATED GUESS AS TO WHY POSSIBLE SOLUTION TO YOUR GUESS TEST YOUR SOLUTION

42. Copyright © 2007 Pearson Education Inc., publishing as Pearson Benjamin Cummings Figure 1.19