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BIOLOGY AS A SCIENCE. THE SCIENTIFIC METHOD – THE UNIVERSAL SCIENTIFIC APPROACH TO PROBLEM- SOLVING.

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Presentation on theme: "BIOLOGY AS A SCIENCE. THE SCIENTIFIC METHOD – THE UNIVERSAL SCIENTIFIC APPROACH TO PROBLEM- SOLVING."— Presentation transcript:

1 BIOLOGY AS A SCIENCE

2 THE SCIENTIFIC METHOD – THE UNIVERSAL SCIENTIFIC APPROACH TO PROBLEM- SOLVING

3 BIOLOGY AS A SCIENCE IDENTIFY THE PROBLEM – A SCIENTIFIC PROBLEM IS PHRASED IN THE FORM OF A QUESTION – EXAMPLE?? FORMULATE A HYPOTHESIS – A HYPOTHESIS IS AN EDUCATED GUESS (*POSSIBLE EXPLANATION*) – “IF, THEN” STATEMENT – NEVER IN THE FORM OF A QUESTION!!!!! – EXAMPLE???

4 BIOLOGY AS A SCIENCE TESTING THE HYPOTHESIS – EXPERIMENTATION – SCIENTISTS WILL SET UP A SITUATION WHERE A PARTICULAR OBSERVATION CAN BE MADE – OFTEN SCIENTISTS USE CONTROLLED EXPERIMENTS TWO, OR MORE, EXPERIMENTS ARE SET UP WHERE ONLY A SINGLE FACTOR IS DIFFERENT BETWEEN THEM THAT SINGLE FACTOR IS CALLED A VARIABLE

5 BIOLOGY AS A SCIENCE CONTROLLED EXPERIMENT – CONTROL GROUP VS. EXPERIMENTAL GROUP

6 BIOLOGY AS A SCIENCE OBSERVE AND RECORD DATA ANALYZE DATA DRAW CONCLUSIONS RETEST / RETEST / RETEST / RETEST / RETEST / RETEST / RETEST / RETEST / RETEST / RETEST SCIENTIFIC THEORIES – EXPLANATIONS THAT APPLY TO A BROAD RANGE OF PHENOMENA AND THAT ARE SUPPORTED BY EXPERIMENTAL EVIDENCE SCIENTIFIC LAWS – A STATEMENT THAT DESCRIBES SOME ASPECT OF A PHENOMENA THAT IS ALWAYS TRUE…NOT AN EXPLANATION!!!

7 BIOLOGY AS A SCIENCE SI SYSTEM

8 BIOLOGY AS A SCIENCE TOOLS OF THE BIOLOGIST – THE LIGHT MICROSCOPE THE SIMPLE MICROSCOPE THE COMPOUND MICROSCOPE THE PHASE-CONTRAST MICROSCOPE THE STEREOMICROSCOPE THE ELECTRON MICROSCOPE LABORATORY TECHNIQUES – CENTRIFUGATION – MICRODISSECTION – CHROMATOGRAPHY – ELECTROPHORESIS – SPECTROPHOTOMETERS

9 BIOLOGY AS A SCIENCE THE LIGHT MICROSCOPE – MAGNIFICATION VS. RESOLUTION

10 BIOLOGY AS A SCIENCE PHASE-CONTRAST MICROSCOPES

11 BIOLOGY AS A SCIENCE STEREOMICROSCOPES – HELPFUL TO SEE EXTERIOR SURFACES, USUALLY PROVIDES A MORE 3-D IMAGE

12 BIOLOGY AS A SCIENCE ELECTRON MICROSCOPES – TRANSMISSION VS SCANNING – 1,000,000x MAGNIFACTION, BUT…

13 BIOLOGY AS A SCIENCE ELECTRON MICROSCOPES – TRANSMISSION VS SCANNING – 1,000,000x MAGNIFACTION, BUT…

14 BIOLOGY AS A SCIENCE LABORATORY TECHNIQUES – CENTRIFUGATION – CHROMATOGRAPHY – ELECTROPHORESIS

15 BIOLOGY AS A SCIENCE LET’S KEEP LEARNING…SO YOU ARE ALL SMART ENOUGH TO AVOID DOING…


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