33. Bacteria and Antibiotic Resistance
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- Опубликовано: 11 май 2020
- MIT 7.016 Introductory Biology, Fall 2018
Instructor: Barbara Imperiali
View the complete course: ocw.mit.edu/7-016F18
RUclips Playlist: • MIT 7.016 Introductory...
Professor Imperiali goes through the mechanisms of how bacteria develop resistance against antibiotics. Following this, she introduces viruses and discusses some of their characteristics.
License: Creative Commons BY-NC-SA
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I am so impressed by the quality of the lectures by prof Imperiali!
The fact that I am listening it after COVID-19 and it looks like she is talking about it an year earllier i.e., 2018.
Absolutely well done and definitely keep it up!!! 👍👍👍👍👍
At the risk of going off topic for a moment, it's funny to see the forest of various adapters and dongles required to be close at hand when you're working with a new and "improved" Apple laptop. That functionality and adaptability used to be built-in.
haha i had a good chuckle as well
Amazing lecture mam
I like the way you teach 😻
21:00 the spanish flu originated from Asia (as almost every single history recorded flu) if i recall correctly the logs. However, as we have seen with the re-emergence of H1N1, it wasn't that scary.
The conditions at that time both in terms of quality of life and healthcare were quite mediocre.
That is a false claim that is not backed up by any scientific studies. No one 100% knows where it originated from, so I don't see any reason for you to claim as if you know the answer.
Most scientists theorize that the place of origin is likely to be in the United States, specifically from a US Army training camp, as there is consistent data linking its origin to the training camps. Other virologists and epidemiologists linked it to British Army camps in mainland Europe, so this is still a disputed topic. The origin is unknown, and there are a few hypotheses surrounding the virus' origin, but it is well established through research that it is unlikely that the virus originated from Asia.
It isn't, and to this day, we still calculate genetic drift mutations in seasonal flu based on samples from Asia.
Genetic shifts also occur in asia where the majority of farms house waterfowl and pigs and where the conditions are deplorable enough for mixing.
I don't know what you think "British army camps in mainland Europe" is, but sounds like failed propaganda. We use the term "Continental Europe"...
And as usual, microbiology wins because no matter how much you want to wash history, you can't, because microbes can't lie...
@@philzan3627 1. Genetic drift has nothing to do with the origins of a virus. And if you want to play the smartass game, then the proper term is called antigenic drift. Both has more to do with the evolution of an organism or a virus than the origin itself. The response is even more brain damaging when you know what genetic drift means. Genetic drift is not something that you "calculate", it is something that you observe. For example, there is one species of squirrel with two phenotypes: black fur and brown fur. One day, a group of poachers eliminated 90% of the squirrels that exhibit the black phenotype, and as a result causes a loss of genetic variation in that population. This is what genetic drift is, but more specifically, it represents the bottleneck effect. Bringing up genetic drift in an argument that questions the origins of a virus poses absolutely NO relevance.
2. "Failed propaganda" If scientific hypotheses are propaganda to you, then I'm afraid I can no longer continue this discussion with you. It's obvious you are politically motivated behind that statement, and there is no reason to include unnecessary politics that again, poses no relevance to the topic at hand. Do note that "British army camps in mainland Europe" came from an article published in Oxford Academic. And not to mention, a quick google search says that "Continental Europe, also referred to as mainland Europe", so I really don't know what you're smoking.
Have a good day; no point in continuing this discussion when you include information that poses no relevance to your original statement. This also serves as a reminder to do your research, because clearly it's lacking.
@@tomato-v8x Oh ok buddy.
👍👍
How many Indian are here