subject
Biology, 06.01.2021 01:00 zahid79

I know it's in the wrong subject but I still need help ASAP save me Louis Pasteur (December 27, 1822 – September 28, 1895) was a French chemist and microbiologist. Pasteur was familiar with Redi’s work and was fascinated by the idea that covering meat could protect it from growing maggots or other organisms that could cause disease. Pasteur devised the process of pasteurization, which is the process of heating liquids to kill bacteria and other germs that may be present. This process is still widely used today to make sure that many of the liquids we drink are safe, such as milk and juice. There are other pasteurized foods too, like syrups, vinegar, and cheese.

So how did Pasteur disprove spontaneous generation? Pasteur used a special flask to show that sterile broth will remain sterile unless exposed to the environment.

Pasteur used a special flask to demonstrate that heating a liquid kills bacteria. His experiments also showed that the broth would stay clear if the bacteria were trapped in the flask’s neck. If he broke the neck off the flask, the broth was soon full of bacteria.

Pasteur put clear meat broth into a flask with a curved neck. The shape of the flask allowed air to enter but kept out bacteria. He heated the flask to boiling and let it sit for several days.

When he returned, the broth was still clear because the bacteria were trapped in the neck of the flask. Then, he went one step further: he broke the neck off the flask, exposing the broth to air. A few days later, the broth was cloudy! Pasteur concluded that bacteria cannot suddenly arise from the broth. Bacteria can only be produced from living bacteria. Life comes from life!

The experiments by Redi and Pastuer helped to convince people that spontaneous generation was not based on fact, that life must exist first to reproduce and create more life.

Describe Pasteur’s results and how they helped disprove spontaneous generation.

ansver
Answers: 3

Other questions on the subject: Biology

image
Biology, 21.06.2019 12:30, sarahgarza5440
Me! eve and sammy are discussing the affects of farming on the environment. eve states that farming does not harm our environment. she believes that it is only beneficial for the ecosystem and species living in it. sammy states that farming can have major impacts on the environment. he believes farming can cause habitat loss. who is correct? question options: eve is correct because farming only leads to positive affects on ecosystems. sammy is correct because farming has major affects on the environment including soil erosion and flooding. eve is correct because farming does not lead to soil erosion and flooding. neither of them are correct.
Answers: 2
image
Biology, 21.06.2019 12:30, LanBon02
When the intestine becomes infected with the food borne illness bacteria e. coli, the bacteria releases a enterotoxin that causes excessive loss of water and electrolytes in the intestines. necessary to return the osmolality of the intestines to normal?
Answers: 1
image
Biology, 22.06.2019 02:00, spyderpunch69
What are the seven economic and social goals?
Answers: 2
image
Biology, 22.06.2019 02:40, maisieisdabomb23
How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.
Answers: 1
You know the right answer?
I know it's in the wrong subject but I still need help ASAP save me Louis Pasteur (December 27, 182...

Questions in other subjects:

Konu
Biology, 30.05.2020 09:00