BF2S Forums Evolution

Primordial Soup. It all began with single-celled organisms and went from there. I took a very interesting class on this and the textbook (written by the professor) was great... too bad I left it at home

Yeah, evolution doesn't attempt to explain how life started... just how it progressed... and you really can't argue with the plausibility of evolution. It makes itself apparent everyday.

*sigh* Evolution isn't about how life originated.  Evolution is the observation of the adaptation of species based on natural selection and their environments.  People need a little education before opening up these powderkeg topics...

evolution happened cause dinosaurs didn't write religious books

The primordial sea was very rich in hydrocarbons, and a much closer moon caused massive tidal forces, resulting in large amounts of static electricity in the atmosphere.

If you pass a high voltage through amino acid rich water, the acids will randomly combine into simple proteins.  If the process is repeated long enough, a self replicating protein will eventually form (a proto-virus) once that first molecule forms, regular evolution will take hold.

It is also possible that multiple proto-viruses arose around the same time, all life may not have the same molecule as an ancestor.

It has also been theorized that archea may have come to earth in an extrasolar object, although this scenario is statistically much less likely.

ATG wrote:

Photosynthisis ( sp ) was the beginning, and as these basic life forms began to adapt and transform the energy from the sun they mutated into more complex forms requiring more complex energies.

Not true at all.  Photosynthesis requires chloroplasts, which are membraned structures.  Membraned structures didn't appear in prokaryotes, only eukaroyotes.  The first bacteria were extremeophiles, meaning they lived in incredibly intense environments, such as volcanic rock or acid baths.  They probably survived by chemosynthesis.

Not to mention, with all the volcanic activity of the primordial earth, there probably wasn't much sunlight seeping through the clouds, which aided in cooling the earth, but also removed the possibility of photosynthesis.

scientists believe that it was just sort of an accident that the correct chemicals came together to spawn the first life form that could reproduce.

ATG wrote:

different compounds from space bombarded the Earth. They mixed, and under pressure and exposure to our elements the morphed into new compounds.

Photosynthisis ( sp ) was the beginning, and as these basic life forms began to adapt and transform the energy from the sun they mutated into more complex forms requiring more complex energies.

Probably not. Photosynthesis didn't come until mitochondria.

Not true at all.  Photosynthesis requires chloroplasts, which are membraned structures.  Membraned structures didn't appear in prokaryotes, only eukaroyotes.  The first bacteria were extremeophiles, meaning they lived in incredibly intense environments, such as volcanic rock or acid baths.  They probably survived by chemosynthesis.

Not to mention, with all the volcanic activity of the primordial earth, there probably wasn't much sunlight seeping through the clouds, which aided in cooling the earth, but also removed the possibility of photosynthesis.

You don't need chloroplasts to photosynthesise, that's just one way of doing it. Any process which involves creating energy from food by using sunlight is photosynthesis.

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I don't like panspermia purely because it's a copout.

You want to know about evolution? Read Darwins theory! You want to know how life started, ask again in 100 years ;P(couple of theories, but nothing proofed yet)

Spark wrote:

ATG wrote:

different compounds from space bombarded the Earth. They mixed, and under pressure and exposure to our elements the morphed into new compounds.

Photosynthisis ( sp ) was the beginning, and as these basic life forms began to adapt and transform the energy from the sun they mutated into more complex forms requiring more complex energies.

Probably not. Photosynthesis didn't come until mitochondria.

Not true at all.  Photosynthesis requires chloroplasts, which are membraned structures.  Membraned structures didn't appear in prokaryotes, only eukaroyotes.  The first bacteria were extremeophiles, meaning they lived in incredibly intense environments, such as volcanic rock or acid baths.  They probably survived by chemosynthesis.

Not to mention, with all the volcanic activity of the primordial earth, there probably wasn't much sunlight seeping through the clouds, which aided in cooling the earth, but also removed the possibility of photosynthesis.

You don't need chloroplasts to photosynthesise, that's just one way of doing it. Any process which involves creating energy from food by using sunlight is photosynthesis.

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I don't like panspermia purely because it's a copout.

Mitochondria secure energy through a completely different pathway than chloroplasts and have nothing to do with photosynthesis. Chloroplasts probably entered the scene as single celled structures that were absorbed by cells, but not destroyed.. because creating your own food using the sun would have been advantageous

twiistaaa wrote:

S.Lythberg wrote:

It has also been theorized that archea may have come to earth in an extrasolar object, although this scenario is statistically much less likely.

that would just explain how life happens to be on earth. not how it started..

likely through the same electrogenesis method on another planet, which was later impacted by a large object, sending debris our way.

hurricane2oo5 wrote:

God created Adam and Eve , not Adam and Steve.

And your comment has exactly what to do with the theory of evolution?