1. Marine Biology The Study of Life

2. I. Science -an ongoing, inquiry-based process to understand the world around us -relies on evidence -challenges accepted theories -undergoes peer review

3. II.Scientific Method -a logical series of problem solving procedures A.Ask an Experimental Question B.Form a Hypothesis - a testable explanation

4. C.Collect Data 1.Controlled Experiment a)Experimental Group: -the part of an experiment exposed to the experimental factor b)Control Group: -the part of the experiment that does not receive the experimental factor -used for comparison

5. 2.Experimental Design a)Manipulated (independent) Variable - the one variable being tested (experimental factor) b)Responding (dependent) Variable - a variable that is measured in a controlled experiment - changes in the responding variable result from changes in the manipulated variable c)Constants (Controlled Variables) - factors that remain fixed during an experiment

6. 3.Data -information gained from observations -Quantitative: numerical (metric system used) -Qualitative: descriptive Jane Goodall collecting qualitative data on chimpanzee behavior

7. D.Analyze the Data -look for patterns to explain the data -graphs, tables, and statistical analysis used

8. E.Report Conclusions - Is the hypothesis supported or rejected by the data? - Experimental findings are subjected to peer review. - If the experiment has merit, it may be published.

9. F.What is a Theory? - explanation that is continually supported by evidence - help us understand the world - used to make predictions

11. CH. 1 Biology: The Study of Life I.What is Biology? Science: an ongoing inquiry into the world around us Biology: the study of living things

12. Organism : -an individual living thing - has all the characteristics of life

13. II. Characteristics of life: A.Organization: O H H CH 2 OH Subatomic ElectronNeutronProton NitrogenCarbonHydrogenOxygen DNAGlucoseWater NucleusChloroplastMitochondrion Nerve Cell Atomic Molecular Organelle Cellular

14. II. Characteristics of life: A.Organization: Tissue Nervous Tissue Brain Nervous System Pronghorn Antelope Organ Organ System Organism

15. II. Characteristics of life: A.Organization: Population Herd of Pronghorns Hawk Water Earth’s surface Community Ecosystem Biosphere Pronghorns Hawk Grass Pronghorns Snake Bushes Soil Air Snake

16. II. Characteristics of life: - Made up of Cells unicellular vs. multicellular Leaf tissue Paramecium and Didinium A. Organization:

17. B.Reproduction - asexual vs. sexual E. coli showing binary fissionHuman egg and sperm Click on picture

18. B.Reproduction parents: - asexual vs. sexual offspring: 12 genetically identical genetically unique

19. 1 cell splitting into 2 cells B. Reproduction Asexual or sexual?

20. B. Reproduction Asexual or sexual? Beetle pollinating a flower

21. B. Reproduction Asexual or sexual?

22. B. Reproduction Asexual or sexual? Hydra budding

23. B. Reproduction Asexual or sexual? Earthworms Mating

24. B. Reproduction Asexual or sexual? Sheep clones

25. C.Growth and Development 1. Growth: -increase in size or number of cells Sea Urchin Early Embryonic Development Click on picture

26. C.Growth and Development 1. Growth: Roundworm Embryonic Development Click on picture

27. C. Growth and Development 2. Development: - increase in complexity Egg Hatching Monarch Butterfly Development

28. C. Growth and Development 2. Development: - increase in complexity Larva Eating Monarch Butterfly Development

29. C. Growth and Development 2. Development: - increase in complexity Chrysalis Pupating Monarch Butterfly Development

30. C. Growth and Development 2. Development: - increase in complexity Monarch Butterfly Development Adults Emerging

31. C. Growth and Development 2. Development: - increase in complexity Common Whelk

32. D. Response to Environment Mia Hamm

33. D. Response to Environment

34. - maintaining a constant internal environment necessary for life Homeostasis :

35. E. Obtain and Use Energy 1. autotrophs: - make their own food 2. heterotrophs: - get food from other organisms Cycad photosynthesizing Praying Mantis eating a Grasshopper

36. F. Evolution - gradual accumulation of useful adaptations over time

37. F. Evolution - gradual accumulation of useful adaptations over time

38. The End