how did first cell evolve?

Question

I just discovered, to a small degree, how a human cell functions.
It's so incredibly bizzare, and complicated, it does not seem remotely possible it came from Mars. May from Uranus. Uranus has the best chance of some kinda somethin evolving. No?

Answer 1

If it started here on Earth, it came about due to natural processes, and I suspect at a geo-thermal vent underneath the ocean, 4 billion years ago.

But I think it started on Mars in similar conditions and was transferred here to Earth soon after.

Answer 2

The human cell evolved on earth...lol...this belongs in the biology section...I remotely remember but not enough to give a detailed answer...I know there was some mitochondria and other basic cell components living independent of each other then they came together...idk ask this in the bio board

Edit:
There are no prevailing scientific theories that state cells came from somewhere else. Not from a comet, not from another planet, 99.99% of credible astronomers will tell you it all happened here. No water did not come from a comet, it came from the volcanic atmosphere in the beginning stages of earth. Once there was water that provided the basic components (water and carbon dioxide) needed for basic cell/bacterial life. From there its all evolution.

Answer 3

It's impossible to KNOW how the first cell evolved. There have been many guesses--hypotheses--some partially confirmed by experiment. It certainly is possible that life evolved somewhere else in the universe and was implanted on Earth by some unknown series of events. Check Wikipedia for starters.

Answer 4

Before cells, there were molecular replicators: molecules that could make copies of themselves with more or less efficiency, with greater or lesser speed. The first replicator was probably created by random photochemical reactions in trapped pools of tidewater.

The first replicator seized atoms from its environment to make its first daughter copy. Then the both of them began constructing new copies. Sooner or later, some of the replicators were hit by UV photons from the sun and incurred mutations, or a slight changes in their copying instructions. Most of the changes were bad, but a small proportion of them were good because they led to greater efficiency in copying themselves from the materials around them.

Some of the mutations also led to advantages in protecting themselves from further mutations; for example, in winning the competition for floor space at the bottom of the tidewater pool, where they would be most sheltered from incoming UV light while they made further daughter copies.

Some mutations bumped into other mutations and got stuck together. Most of the time, this spelled "curtains" for the unlucky couple, neither of whom were able to destroy and assimilate the other one's atoms, while they inhibited each other's replication ability. But in a small number of cases, the combination of the two replicator molecules led to the ability to copy the entire assemblage of both of them, and a larger replicator came into being, with each of the originally separate parts adding some specialized advantage to the whole.

The cell came into being in that manner, as replicating clusters of clusters of molecules devised a whole having the requisite complexity.

Answer 5

How does it being bizarre and complicated mean it couldn't have come from another planet? Besides, that's just one theory - it hasn't been confirmed yet. And you don't know much about astronomy - or biology, if you're posting this HERE.

Answer 6

God