Chapter 1 The Science of Life. I. Themes of Biology A. Cell Structure and Function 1. Unicellular 2....
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Transcript of Chapter 1 The Science of Life. I. Themes of Biology A. Cell Structure and Function 1. Unicellular 2....
•I. Themes of Biology
•A. Cell Structure and Function
•1. Unicellular
•2. Multicellular
•3. Cell differentiation
•C. Reproduction and Inheritance - transfer of genetic material from parents to offspring.
•1. Asexual reproduction
•F. Matter, Energy, and Organization
•1. Autotroph - produces nutrients by photosynthesis.
PlantsAlgae
Cyanobacteria
•II. The World of Biology
•A. Characteristics of Life
•1. Composed of Cells - microscopic units of life.
•2. Organized at the molecular and cellular levels.......functions.
•3. Use energy in a process called metabolism......allows for growth.
•4. Homeostasis - internal balance.
•5. Growth - occurs through cell division.
•6. Reproduction - continuity of the species.
•1. Define the problem.
•2. Research.
•3. Form hypothesis - trial solution.
•4. Experiment to test hypothesis.
•Experimental group - variable tested.
•Control group - “comparison”.
Steps:
•5. Observe and record data.
•6. Draw conclusions.
•Theory - hypothesis supported by many experiments.
•Law - theory supported by many experiments.
•IV. Microscopy and Measurement
•A. Microscopes
•1. Light microscope - light produces the image.
•Magnification - enlarge.
•Resolution - clarity.
•2. Electron Microscope - uses a beam of electrons focused by magnets to produce an image.
•TEM - very powerful.
•SEM - 3-D image.