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

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Presentation transcript:

BIOLOGY AS A SCIENCE

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

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???

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

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

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!!!

BIOLOGY AS A SCIENCE SI SYSTEM

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

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

BIOLOGY AS A SCIENCE PHASE-CONTRAST MICROSCOPES

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

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

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

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

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

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