Overview of Archaea, Protista, and Bacteria | Cells | MCAT | Khan Academy

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Опубликовано:

19 янв 2015

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Комментарии : 37

@edwardduffy9395 4 года назад

Fimbriae are not the same as pili. Fimbriae attach to substrates or other bacterial cells to form colonies. Though pili can do the same thing, they facilitate bacterial conjugation and fimbriae do not. Pili are shorter than fimbriae and are much less abundant. Pili are found in gram negative bacteria while fimbriae are found in gram positive and gram negative bacteria. There are other differences between them..

@psychoff904 Год назад

Las fibribas no son lo mismo que los pili. Las fibrinas se adhieren a sustratos y otras celulas bacterianas para formar cilonias au quelos pilo puedan hacer lo mismo dacilitan la conjugacion bacteriana, los pili son mas cortos que las fibrinas y son menos abundantes

@TheGbabes 7 лет назад

The 3 Domains are Archaea, Bacteria, and Eukarya.

@paulsammons9254 7 лет назад

Here is a typical bacteria Me: "that's a pickle"

@lom_loren8966 3 года назад

wow

@chadpittman4741 8 лет назад

I believe that Eukarya, Archaea and Bacteria are a set of Domain and not Kingdoms. I'm taking the class, but I believe that's it.

@vidushishuklatiwari 8 лет назад

+Chad Pitman Depends if you are using the Whittaker's 5 kingdom classification (Monera, Protista, Fungi, Plantae, Animalia) or Carl Woese's Domains (Archaea, Eubacteria, Eukarya) :-D

@lanapshtiwan2117 5 лет назад

@@vidushishuklatiwari Today's scientists no longer use the Whittaker classification because the three-domain system ( Archaea, Eukarya, Bacteria) is based on DNA analysis and modern science which is more reliable because it accurately reflects the evolutionary history and relationship amongst organisms. In addition, Monera is no longer used because prokaryotes are spread amongst two different domains Archaea and Bacteria because Archaea are not bacteria and they have very little in common.

@prisce7642 7 лет назад

THANKS! THIS HELPED A LOT :)

@karolgilbertosolanosuarez9094 6 лет назад

This must be updated as it is not working exactly like that actually.

@aperturepriority3097 8 лет назад

wow'

@lateasareynolds7194 3 года назад

LMAO These comments are hilarious. Yea I better get a good tutor or else I'm screwed! smh...

@MalikMalik-dn6nn 2 года назад

I have a need for major groups of protista

@shailzabhati7248 3 года назад

Oh today i learned about in microbiology, and then this video i just loved it

@Ilemaurice687 Год назад

Hey i have a question You have purchased an expensive tray of salmon sushi from a local supermarket. As you get ready to eat the sushi, you notice that the rice underneath the salmon pieces looks pinkish. You suspect that the fish has been dyed and is not actually salmon. Elaborate on an experimental strategy that will allow you to verify your suspicions and discuss the reasons behind such substitution practices.

@Ilemaurice687 Год назад

Can u help me