Science Essay

CELL possibility nonES The Scientific Method 1. Make posting 2. Ask a Question 3. Form a conjecture (possible explanation) 4. Set up a Controlled Experiment that tests only 1 variable Variable factors in try that can shift (ex: temperature, time, oxygen levels, light) 5. Record/Analyze results 6. Make conclusions from results 7. Retest unbidden contemporaries (S.G.) The idea that life story things can line up from non- documentation things The sideline scientists used the scientific method to test the theory of extempore contemporaries: Redi, Needham, Spallanzani, & Pasteur Redi o Covered jar of meat o Results: No Maggots/Flies o Conclusion: S.G. does NOT happen, nerve doesnt Make flies physical contact to Redi flash bulb Animation http://www.sumanasinc.com/web guinea pig/animations/content/scientificmethod.html Needham ? change state farm animal shortly time until clear ? Results: eld later bacteria appeargond in gravy ? Conclusions: - offhand Generation CAN happen, Bacteria made from lineage ? Mistakes: Didnt churn long enough & every(prenominal)owed air (with bacteria) to get in Spallanzani ? stewed broth LONG time & Sealed Jar ? Results: eld later until now NO bacteria ? Conclusions: Broth does NOT make bacteria, S.G. does NOT happen ? Critics said... you lead air for Spontaneous Generation. CELL THEORY NOTES Pasteur ? use swan-necked flask so air can get to broth ? Boiled broth for long time ? Microbes got stuck in bend ? Results: No microbes appeared in broth ? Conclusions: o broth does NOT make bacteria o S.G. does NOT happen o All living things must come from other living things! Link to Pasteurs Experiment Flash Animation http://bcs.whfreeman.com/thelifewire8e/content/cat_010/0304003.html CELL THEORY 1. All living things are made of cells 2. Cells are the canonical functional unit of all living things 3. All cells come from existing cells LEEUWENHOEK 1st to see living ce lls motto in pond water ROBERT HOOKE Use! d light microscope to discover cells authentically saw...If you want to get a full essay, order it on our website: BestEssayCheap.com

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