BioUnit1

BioUnit1 - SOME USEFUL WORD ROOTS FOR BIOLOGY: As we go...

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SOME USEFUL WORD ROOTS FOR BIOLOGY: As we go through the semester, can you put some words we use next to these word roots? “di” or “dy”– two “bi” – two “-ose” – sugar “-ase”- enzyme “poly” – many “mono” one “eu” –true “kary” – kernel (nucleus) “pro”- before “-phobic” - fearing “-philic” – loving “endo” - within “ex” –out “lysis” break apart “pseudo” – false “pod”, “podia” – feet “cephalo” head “hypo” – low “hyper” –high, excessive “allo” – other “glyco-” sugar “an” – without “aero” – air (oxygen) “oxy” -oxygen “hemi” half “homo” – same “hetero” different “pheno”- show or see “photo”- light “auto” – self “troph”- feed “hydro” water “morph” – form or structure “co”- together “intra” within “inter” between “de”- remove 1
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The process of science I. Discovery Science A. What is it? B. Examples 1. animal behavior 2. anatomy C. Inductive reasoning – - reasoning specific observations and measurements II. Hypothesis-Driven Science (Scientific Method) A. What is it? Discovery by beiginning with a specific question. Uses controlled experiments to test a tentative answer. B. The steps: 1. observations: i.e. children diagnosed with hemophilia often have a deficiency of the factor 8 …. 2. question: only follow one at a time:why do they lack factor 8? 3. hypothesis: tentative answer (use to test): lack of factor 8 is the cause of hemophilia. Only test one at a time 4. prediction (if then = deductive reasoning) if have factor 8 deleted from genome from birth then the individual will display hemophilia 5. perform a controlled experiment (on mice = model organism) *experimental group = treated group control group = untreated mice who have developed and been housed with the experimental group ONLY ONE VARIABLE =presence of factor 8 (same location, same light/dark cycle, same food, same type of housing. -measurements = amount of bleeding 2
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6. Analyze the results *73% experimental group had hemorrhage by month 3 and 95% dead by month 7 *1.2% control group daead by month 3 7. Conclusion = supports or doesn’t support the hypothesis (never say prove ) C. Mimicry example 1. Observations – a. jumping spiders wave their legs around competitors (other spiders) b. flies wave their wings when approached by a jumping spider 2. Question – what is the function of the flies wing markings and its behavior? 3. Hypothesis – the markings and the waving prevent pouncing by the spider 4. Prediction – if the flies’ wing markings and behavior prevent pouncing , then masking the markings should increase spider-pouncing. 5. Controlled experiment
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This note was uploaded on 12/08/2008 for the course BIOL 101 taught by Professor Hogan during the Spring '08 term at UNC.

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BioUnit1 - SOME USEFUL WORD ROOTS FOR BIOLOGY: As we go...

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