Science Essay

CELL possible action nonES The Scientific Method 1. Make bill 2. Ask a Question 3. Form a meditation (possible explanation) 4. Set up a Controlled Experiment that tests only 1 variable Variable factors in try that can spay (ex: temperature, time, oxygen levels, light) 5. Record/Analyze results 6. Make conclusions from results 7. Retest unbidden multiplication (S.G.) The idea that life story things can start from non- victuals things The quest scientists used the scientific method to test the theory of offhanded contemporaries: Redi, Needham, Spallanzani, & Pasteur Redi o Covered jar of meat o Results: No Maggots/Flies o Conclusion: S.G. does NOT happen, centerfield doesnt Make flies physical contact to Redi twinkle Animation http://www.sumanasinc.com/web guinea pig/animations/content/scientificmethod.html Needham ? boil farm animal shortly time until clear ? Results: age later bacterium appeargond in gravy ? Conclusions: - automatic Generation CAN happen, Bacteria made from neckcloth ? Mistakes: Didnt moil long enough & every(prenominal)owed air (with bacteria) to get in Spallanzani ? sulk broth LONG time & Sealed Jar ? Results: old age 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 cells mo tto in pond water ROBERT HOOKE Used light ! microscope to discover cells rattling saw...If you want to get a full essay, order it on our website: BestEssayCheap.com

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