00:01
Hello students, so today's questions are related to the arki.
00:04
So the question is about, the question first one is about environment in which the extraterrestrial halo was first isolated, then we have to talk about the domain of archa and when it was first established.
00:19
Other than that, we have to talk about its properties like tolerance for the high salt conditions.
00:25
So, first of all, moving on to the first question and solving it.
00:30
So the first one is extraterrestrial halophiles.
00:34
They were isolated in those area with having high salt concentration.
00:40
High salt.
00:42
So when they found the high salt concentration in area, so they researched about that and they found them.
00:50
So halophiles are isolated in conditions of 20 to 30 % of salt.
00:55
20 to 30 % of salt.
00:58
Now, if we talk about the arque, if we talk about the archaea, we know that they are most primitive, most primitive and they can live the harsh environment.
01:10
Unlike the other bacteria, they can live in the harsh environment and very few organisms can survive.
01:16
Few organisms can survive, actually.
01:20
So they, their cell wall lack peptidoglycogen.
01:25
Peptidoglycogen, we know.
01:25
That it is found in other bacteria but it is not found in the arki.
01:30
Now, if we talk about the time when it was first established.
01:33
So hot spring, hot spring of the yellowstone national park, national park, usa, united states.
01:49
So they were among the first place where arki was found.
01:53
So it was a, we know that it is, the archie has been on earth around 3 .5 billion years ago, years ago since they have been found on earth...