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Louis Pasteur

This category is for questions about the French chemist and microbiologist who led breakthroughs in the understanding of cells and their functions.

499 Questions

What was Louis pasteur's contribution to the cell theory?

He had two bulbs of broth, one boiled and the other plain. After his expiriment, the unboiled bulb had bacteria in it.

Louis Pasteur Proved that bacteria can only be produced by existing bacteria.

What is the definition of pasteurization?

Pasteurization is a process that involves heating a food or liquid to a specific temperature for a set period of time in order to kill harmful bacteria and pathogens. This process helps to extend the shelf life of the product and make it safer for consumption.

What high school did Louis Pasteur attend?

His father wasn't well educated but he wanted Louis to get a good education. He studied in the College of Arbois, where he graduated in arts in 1840. Louis paid little attention to his books. He dedicated himself to fishing and sketching. For a time it seemed as though he would become a painter. Then, he became interested in science and went to the College of Besancon, and there he received his degree in science.

He then went on to Paris to study under Dumas, Balard, and Biot.

What is Louis Pasteur and Spontaneous Generation?

Louis Pasteur was a French scientist who made great contributions to our understanding of microbiology process of "pasteurization".Spontaneous Generation is the assertion that life can arise from nonliving matter.

Who invented pasteurized milk?

The first pasteurization test was completed by Louis Pasteur (whom its named after) and Claude Bernard on April 20, 1862. It was discovered prior to that but Pasteur had not performed an experiment.

The process was to heat a liquid (normally milk) to a high temperature, roughly 71C, and then drastically cool it for at least 15 secs. This kills off most of the bacteria.

The amount of time that the liquid is heated and cooled, and to what temperature, is dependent on the liquid being pasteurized. This means the bad bacteria and harmful fungi can be more efficiently stunted in growth.

AnswerLouis Pasteur

Louis Pasteur was the main one doing the job in some sayings. Claude Bernard was also there to help discover this process. Louis was just he first one to say something about it.

What turned sour that Louis Pasteur was making?

Louis Pasteur was studying fermentation in various substances, including beer and milk. He discovered that souring in milk was due to the fermentation of lactic acid bacteria, leading to the process of pasteurization to prevent spoilage.

Filipino scientists who made great contribution to electricity?

Filipino scientists such as Francisco Quisumbing, Amando Kapauan, and Paulo Campos made significant contributions to the field of electricity. Quisumbing invented the Quink-Quisumbing electric lamp, Kapauan developed a portable X-ray machine that runs on batteries, and Campos worked on renewable energy solutions using wind and solar power.

Did Louis Jolliet ever get married?

Louis Joliet married Claire-Francoise Bissot on October 7, 1675. They had one child, Jean-Baptiste Joliet.

What is the difference between orange juice orange drink orange beverage orange punch and orange cocktail?

Orange juice is the juice of an orange.

Orange drink and orange beverage are drinks that are orange flavored, but generally contain little to no actual juice.

Orange cocktail is an orange juice based drink mixed with other juices or flavors.

Who invented the process of pasteurization?

Louis Pasteur, a French chemist and microbiologist, is credited with inventing the process of pasteurization in the 19th century. Pasteurization involves heating liquids such as milk or wine to a specific temperature for a set period of time to kill harmful bacteria and prolong shelf life.

What did Louis Pasteur invented?

He developed the first vaccine against anthrax, a deadly bacterial disease that affects both humans and animals and he proved that the idea of spontaneous generation was not true, through a year-long experiment. He was also involved in a lot of experiments in microbiology and is regarded as a very well known Biologist.

What is the functions of Pasteur salt solutions in fermentations?

The pasteur salts in solution act as a buffer to any acids the yeast may create. Since yeast only converts sugar (most likely sucrose or glucose) to ethanol under anaerobic conditions, and it is unreasonable to assume that there will be no oxygen present in the laboratory, some acetic acid is created as a result. The pasteur salts act as buffers to the acidity so that the proteins in the yeast do not become denatured. Hope this was the answer you were looking for

What is the spontaneous genaration and whose experiments proved it wrong?

Spontaneous generation was the idea that living thoings could develop directly from non-living materials. (See http://www.biology.clc.uc.edu/courses/bio114/spontgen.htm). Experiments carried out by the French scientist Louis Paeteur provided evidence against this idea. (See http://www.kent.k12.wa.us/staff/TimLynch/sci_class/chap01/pasteur.html).

Why is cheese orange?

Cheese can be orange due to the addition of natural or artificial colorants like annatto, paprika, or carrot juice. These colorants are used to give cheese a more uniform and appealing appearance, especially in cases where the milk used may not naturally produce a vibrant yellow color.

How did Louis Joliet die?

Jolliet left the area of Quebec for Anticosti Island, a large island in the Gulf of St. Lawrence, in 1700, and was never seen again. His body was never found, and we have no idea what happened to him.

How much does a mercenary earn?

A carreer as a mercenary can be a very rewarding one as they can make up to several times as much as the American forces in Iraq do. The lowest rank in the U.S. military serving in Iraq makes $15 830 per year ( I believe, It may be a bit more) and most mercenaries in Iraq make between $150 000- $250 000 per year. Some of these mercenaries are hired by private corporations to guard there interests such as oil companies hiring them to guard oil refinries but mercenaries are also hired by governments as well.

How to you make a feasibilty study?

A feasibility study is typically conducted by gathering and analyzing relevant data to assess the viability of a proposed project. The study should include an analysis of the project's goals, potential risks, costs, timeline, and expected benefits. Once all these factors are evaluated, a decision can be made on whether to move forward with the project.

What is the function of DPIP in this experiment?

Is this an AP lab?
The DPIP replaces NADP+.
In photosynthesis, NADP is reduced to NADPH, but NADP is colorless.
DPIP replaces the NADP. When DPIP is reduced, it changes from blue to clear. DPIP is used to show photosynthesis taking place.

Was Louis Pasteur a Freemason?

Louis Pasteur was most likely never a Freemason. He is not listed in William R. Denslow's definitive book, 10,000 Famous Freemasons, or by any other reputable source. Understand that, in most cases, it is virtually impossible to prove a negative, therefore one cannot say with absolute certainty that Pasteur was NOT a Freemason, but there is no evidence to indicate that he was.

Masonry, like most groups, is very proud of its famous members and usually points them out, so if evidence existed, Pasteur would be claimed as a member by the Fraternity. When only anti-masons are the ones claiming someone was a Mason, it is very unlikely that the person really was. Despite what some say, Freemasonry simply isn't a "secret society" and there are generally plenty of membership records to be found.

What are the pros and cons of being a forensic science?

Pros: Opportunities to use scientific expertise in criminal investigations, contribute to solving crimes, work in a variety of settings like crime labs or medical examiner offices. Cons: High-pressure work environment with tight deadlines, exposure to graphic and distressing material, potentially long hours.

How much does otolaryngologist earn?

Starting out anywhere from 200,000 per year to 300,000 per year depending upon location, bonus structure, etc. It takes about 3-4 years to really get up an running, after which an ENT should make about 350,000 per year assuming a 50% overhead. It's possible to make 500,000 to 600,000 per year if you are really busy and keep overhead low. Of course all this could go way down in an Obama presidency if we get a single payor system....

This is a very accurate answer. One thing that can really improve earnings and reduce overhead is a good EMR system. I have a very busy practice, though I only work 4 1/2 days a week and take 4 weeks a year off. My first year in practice I earned about $450K, the next year $525K and last year $670K. I am the busiest surgeon at my hospital of about 200 beds in the mid South. This past year my overhead was 35%. Our hospital recently recruited another ENT and his base salary was $325K with a $50K signing bonus and $20K for moving expenses. If we get a single payor system all bets are off....:(