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How spontaneous generation was disproved
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From the beginning of time it was believed that living things could come from nonliving things. This process was known as spontaneous generation. However, in the middle of the 17th century and then through the next 100 years, this idea was disproved by three important experiments. We now know that a nonliving object or group of objects can not turn into a living organism. Spontaneous generation is impossible in the atmosphere that we have today.
In the early 1600’s, people believed that living organisms could evolve from nonliving organisms. They proved this by saying that if a piece of meat was left out uncovered, that maggots would appear in a few days. These worms did not come from anything that they could see, so they assumed they came from the nonliving meat. In 1668, a man named Redi designed and completed an experiment that showed how this was not true. He took two pieces of raw meat, and left them out. He covered one so that nothing could get in, and left the other one open. The open one grew maggots, and the covered one did not, proving that the dead meat did not produce the worms as they had previously thought.
In the 1700’s a man named Spallanzani proved Redi’s idea to a further extent. He noticed microbial growth on boiled pond water after being exposed to the air. To prove that this growth came from something living in the air, and not from the nonliving water, he designed an experiment. He boiled pond water to kill all the microbial growths. He then poured that water into two separate test tubes. He sealed one so that no air could get in, and left one open to the air. The one that was left open slowly became more and more cloudy with microbial growths. The sealed tube stayed as clear as it had been when it was boiled. This experiment proved that the growths could not come from nonliving organisms, but had to have been transported there through the air. When Spallanzani presented his results to the public, he was criticized. Other scientists said that he made the air unfit for living growth, and that they needed the air to change from nonliving to living.
Pasteur did the third experiment, in 1862. He took Spallanzani’s experiment, and the critic’s statements, and combined the two. He boiled pond water to kill all the living organisms.
Eventually, his research led to the discovery of genes. In 1892, Elie Metchnikoff discovered phagocytosis. After observing the larvae of starfish, he found that mobile cells served as a defense for the organisms. This research on the cells lead him to believe that these cells swallow up and digest bacteria, therefore leading into the identification of white blood cells. Although it is unclear who deserves credit for the discovery of aspirin, Felix Hoffman and Heinrich Dreser are credited for the introduction.
The person can experience hallucinations and mood swings. In her writing, it is visible the hallucination around the yellow wallpaper, how delusional she becomes, looking at the wallpaper. At the end of the story, she is completely delusional, and strips off the wallpaper from the wall (Gilman). Many are the symptoms of mania, it includes grandiosity; irrational imagination; the person does not want to sleep; frenetic speech. All of these symptoms can be noticed in her in this story. Bipolar I can be treated with a mood stabilizer, antipsychotic, and antidepressants
According to Center for Disease Control and Protection, about 4,700 people under age twenty one die from injuries involving underage drinking every year. Illegal alcohol consumption has been a major problem with high school students around the nation. Lowering the drinking age from twenty one would result in major consequences for America’s adolescents. By lowering the drinking age, alcohol would be more accessible to those who choose to participate in underage drinking. The desire to drink for teens and young adults between the ages of fourteen and twenty can be caused by peer pressure or an act of rebellion. One beer might not seem like a big deal at the time, but it could lead to a life of addiction and alcoholism.
Related to thought disorder is obsession, which the protagonist displays in her relentless thoughts about the yellow wallpaper which covers her bedroom walls. The narrator begins her obsession with the yellow wallpaper from the very beginning of the story. "I never saw a worse paper in my life," she says. "It is dull enough to confuse the eye in following, pronounced enough to constantly irri...
There are various interpretations of what causes the narrator to go crazy in the short story “The Yellow Wallpaper” by Charlotte Perkins Gilman. These interpretations include suggestions that the narrator is possessed, that she is oppressed by society and is acting out, that she has suffered from a traumatic childbirth, and so on. While all of these ideas hold merit and are supported by evidence in the short story, there is an alternative explanation that fits the story just as well, if not better. That explanation is that the reason the narrator in “The Yellow Wallpaper” acts strangely and sees images in the wallpaper of her room is that she is suffering from the disorder of postpartum psychosis. During this essay I will be going into depth on a psychological analysis of “The Yellow Wallpaper”.
Lowering the drinking age from twenty-one to eighteen is a good idea because it will most likely promote responsibility, alcohol consumption will be more controlled, and, if not done so, it is posing as discrimination against the eighteen to twenty age group; however, lowering the legal drinking age back to eighteen can be fatal because the brains of the eighteen to twenty year old age groups are not fully developed, binge drinking and alcohol addiction rates will go up, and the drinking and driving rates will increase.
happen? If not, then why should science teachers teach that life evolved over billions of
Some laws even make it easier for teens to drink, like in some states if a parent purchases the alcohol it is fine for the teen to drink. That law is abused though since one parent will buy beer for a complete party and not just for their teen. There have been some cases where the cops have cracked down on this problem but not enough. Teens are not seeing underage drinking as something wrong whether it be because they think it will help them fit in or to cover up feelings of sadness or hatred. When a teen sees the "cool" kids drink they want to join in so that they ...
There is a fine between crazy and desperate, but what would be considered seeing a woman beyond the walls, a cry for help or just pure insanity. In the narrative “ The yellow wallpaper” written by Charlotte Perkins Gilman, an unnamed, wife and mother in the 1800’s is diagnosed with temporary nervous depression. During this time, the cure for women was to be on bed rest, away from any form of stress. Therefore, the narrator’s husband takes her to an isolated estate in the country, where is is cut off from everything she loves, but she secretly writes to keep herself sane. Unfortunately as the story progresses, the writing fails to save her and the narrator’s illness becomes more visible, and more serious. She sits in one room of the house all
Life, it might be argued, is the distinguishing feature of all organisms and may most usefully be thought of as involving various kinds of complex systems of organization providing individual organisms with the ability to make use of those energy sources available to them for both self maintenance and reproduction. Underlying this deceptively persuasive definition, however, lie those persistent traditional problems inherent in the search for an essential, distinctive substance characteristic of all forms of life. Additionally, as evolution theory makes clear, there is the problem of borderline instances, organisms of which it is not easy to say whether or not they may be defined as being alive. One such case is that of the virus.
People who think the drinking age should be lowered are because of three facts. Under the National Minimum Drinking Age Act, fewer young adults drink, but when they do drink they tend to drink more, which lead to a more serious problem - binge drinking. Furthermore, people can vote, adopt children, sign up for Iraq or become a commercial pilot at 18. Therefore, it is double standard to set the drinking age at 21. Another point is that kids are going to drink regardless of its legality. It is better to lower the drinking age so they can do it legally and parents can reach to them more easily. On the other hand, some people think the government should not lower the drinking age becau...
Keeping the legal drinking age at 21 ensures that fewer motor vehicle accidents will occur each year. It has also proven that students in states that had a drinking age of 18 had a high school dropout rate thirteen times greater than states with a legal drinking age of 21. This allows for more school age children to be on the streets getting into more trouble than staying in school and getting a proper
Everyone has had an alcoholic beverage sometime in their life, including kids under the age of 18. Kids will sneak a drink behind their parents back, or when they’re in college they will drink with their friends while there’s no supervision. Drinking age has been a huge concern in the United States for many years. A lot of tragic deaths have occurred due to underage drinking.