Preview

The Journey from Spontaneous Generation ro Biogenesis

Good Essays
Open Document
Open Document
438 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
The Journey from Spontaneous Generation ro Biogenesis
The Journey from Spontaneous Generation to Biogenesis

Redi, Leeuwenhoek, Needham, Spallanzani, and Pasteur changed the way we think about life by trying to prove and disprove Spontaneous Generation or the idea that life could arise from nonliving matter. Redi disproved Spontaneous Generation. He only believed in Biogenesis which is that all life comes from life. Needham believed in Spontaneous Generation and wanted to prove it. Spallanzani wanted to know what caused microbes. Pasteur put an end to Spontaneous Generation and proved Biogenesis. Redi was the first scientist to challenge the theory of Spontaneous Generation by demonstrating that maggots come from egg of flies. He believed that all life comes from life which is Biogenesis. Redi made a prediction that keeping flies away from the meat would prevent the appearance of maggots. He had one flask with meat in it that was covered with gauze and the other was uncovered. The flask that was uncovered had formed maggots , the flask that was covered didn’t. He proved that maggots arise from the eggs laid by flies, not by Spontaneous Generation. This supported the theory of Biogenesis. Leeuwenhoek invented the first microscope and with that microscope he discovered microorganisms or tiny moving objects. Inferring that these objects were alive, he called them tiny animals. Needham claimed that Spontaneous Generation could only occur under the right conditions. To prove his thought, he boiled gravy, let it cool and then sealed the flask, later he finds the broth is filled with microorganisms. “These little animals”, he inferred, “can only have come from juice of the gravy.” Needham thought he proved Spontaneous Generation But what he didn’t know he had done wrong was leave the flask open to cool, that’s what caused the microorganisms to form in the gravy. Spallanzani wanted to know what causes microbes to form in boiling broth. He wanted to prove that microbes come

You May Also Find These Documents Helpful

  • Powerful Essays

    BIO 104 Chapter 3

    • 7229 Words
    • 29 Pages

    On this day, as Fleming sorted through the plates, he noticed that one was growing a patch of fluffy white mold. It had been contaminated, likely by a rogue mold spore that had drifted in from a neighboring laboratory. Fleming was about to toss the plate in the sink when he noticed something unusual: wherever mold was growing, there was a zone around the mold where the bacteria did not seem to grow. Curious, he looked under a microscope and saw that the bacterial cells near the mold had burst, or lysed. Something in the mold was killing the bacteria.…

    • 7229 Words
    • 29 Pages
    Powerful Essays
  • Good Essays

    Before Virchow, one idea was that living things could arise from non-living and from dead matter, a process called ‘spontaneous generation’.…

    • 1199 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Wachtershauser's(1918) theory proposed that life was developed on the surface of iron sulfide minerals. The way this experiment was tested was the water flow was pressurized and heated with dissolved volcanic gases to 100degrees Celsius. The flow passed over the iron sulfide to form catalytic metallo-peptides. Scientists support this hypothesis because they believe in the biochemistry of iron sulfide being the reason for life.…

    • 770 Words
    • 4 Pages
    Good Essays
  • Good Essays

    ENTM 105

    • 681 Words
    • 5 Pages

    - To test his prediction in his experiment, Redi manipulated flies by preparing jars of meat that each…

    • 681 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    Bio Exam Study Guide

    • 1502 Words
    • 7 Pages

    The scientists usually given credit for disproving the theory of spontaneous generation of bacteria are:…

    • 1502 Words
    • 7 Pages
    Powerful Essays
  • Satisfactory Essays

    Describe at least one of the early research theories about the origins of life on Earth.…

    • 256 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Describe at least one of the early research theories about the origins of life on Earth.…

    • 2163 Words
    • 9 Pages
    Powerful Essays
  • Good Essays

    The Primordial Soup Hypothesis was introduced by the Soviet biologist Alexander Oparin in the 1920s. It states that there were chemicals in the atmosphere that formed molecules. These molecules were brought to life by lightning and then rained down and formed a puddle. This puddle will later be known as the primordial soup. This…

    • 1098 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    Louis Pasteur-showed microbes caused fermentation and spoilage, and disproved spontaneous generation by use of swan neck flasks in his experiments…

    • 3769 Words
    • 16 Pages
    Powerful Essays
  • Satisfactory Essays

    Hi this is ap euro

    • 576 Words
    • 3 Pages

    4.Pasteur’s theory that germs caused disease helped the advancement of medical sciences and led to the breakthrough of vaccines. Koch helped discover the organism that caused disease and it helped create vaccines. Lister helped develop the idea of cleaning wounds.…

    • 576 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Another creditable experiment was a study by James Arthur Reyniers who was a bacteriologist trying to make the first germ free animal. The study consists of giving birth to a guinea pig inside a giant metal ball so that the baby could live in a world without any germs. Reyniers believed if we could “kill the germs” then “we would be healthier and happier” (74). However, Dunn was able to refute Reyniers’ argument by expressing Reyniers’ failure of keeping bacteria out of the chambers killing the guinea pig. Therefore, due to Reyniers’ credentials in bacteriology, this study was appropriate to prove that we can live without bacteria as long as that is where we were birthed but it is too hard to exclude…

    • 1430 Words
    • 6 Pages
    Good Essays
  • Satisfactory Essays

    Rowe suggests that premise 2 “seems to be a necessary truth.” But it certainly is not if we take Clarke’s analysis of premise 1. If a living thing exists and it is not the case that something has always existed, then it does conclude that something has been produced out of nothing.…

    • 247 Words
    • 1 Page
    Satisfactory Essays
  • Best Essays

    References: Ayala, F. J. (1982). Beyond Darwinism? The Challenge of Macroevolution to the Synthetic Theory of Evolution. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association. 3 (Symposia and Invited Papers). 275-291.…

    • 2232 Words
    • 9 Pages
    Best Essays
  • Good Essays

    His hypothesis of natural selection depended on four facts; the first fact is that non-human living organisms number increase more quickly than their food supply. The second fact is Due to natural selection; there is never overpopulation in the non-human living organisms, in light of the fact that some of them will be eaten or fail to survive at a young age. The third fact is due to limited resources, all living organisms battle to survive,…

    • 714 Words
    • 3 Pages
    Good Essays
  • Good Essays

    A-Level biology catalysed my interest in the subject. I was enthralled by a taster lecture at the University of Cambridge on the semi-independent life of mitochondria. The lecture explored mitochondria’s double-stranded DNA and its frequent mutations that increase exponentially with age. I was particularly intrigued by the mention of Lynn Margulis’ symbiogenesis theory. Upon further research, the idea that free-living bacteria were taken inside another cell over a billion years ago seemed plausible and yet fascinating.…

    • 612 Words
    • 3 Pages
    Good Essays