Is this true that human came from single cellular organism?

I want to know...because i don't believe it! I believe that God has created us..........Is this true that human came from single cellular organism?
During the first billion years on earth, there was little free oxygen and no ozone to absorb UV radiation from the sun. Yet, simple organic molecules were formed under such harsh conditions. Laboratory experiments simulating the primitive earth have confirmed that organic molecules could have been formed. When gases such as CO2, CH4, NH3, and H2 were heated with water and energized by electrical discharge or by UV radiation, they reacted and formed small organic molecules. More importantly, the organic molecules that were crucial to life (amino acids, nucleotides, sugars, and fatty acids) were also generated.


Organic molecules such as amino acids and nucleotides can interact to form polymers. The polymer of amino acids and nucleotides are called polypeptides and polynucleotides respectively. These polymers are capable of directing their own synthesis. For example, a polynucleotide is able to influence the replication of other polynucleotides by acting as a template.


The complementary nature of nucleotides is crucial in the origin of life. Because A preferentially binds to U and G preferentially binds to C, a polynucleotide is thus able to serve as a template for synthesizing the complementary strand. However, this complementary templating mechanism only occurs slowly without the assistance of certain protein catalysts, or enzymes. Although no such enzyme existed in the ';prebiotic soup,'; certain minerals and metal ions filled in the role of enzymes. After a period of time, slow replicating systems of polynucleotides were established.


Just as a polynucleotide can serve as the template for synthesis of the complementary strand, specific portions of a polynucleotide can also pair with free complementary nucleotides within itself. This self-complementary binding allow the polynucleotide to form specific structures. Much like proteins, this structure determines a polynucleotide's stability and ability to replicate.


While polynucleotides can self-replicate, their replication is not always error free. Errors during replication could influence the polynucleotide sequence and subsequently result in a different structure. Therefore, as polynucleotides undergo numerous cycles of replication, the ones that have received more beneficial mutations will survive over the ones that received non-favorable mutations.


In this way eventually the cells evolved to form dinosaurs apes and homo sapiens.Is this true that human came from single cellular organism?
Just as amazing it may seem that life started from organic matter (and a bit of inorganic matter), complex organisms indeed evolved from simpler ones, with unicellular organisms at the beginning.
to understand the origin of human being first understand the origin of life


there are many theories


the most accepted one is abiotic theory which is proved my miller's experiment





http://en.wikipedia.org/wiki/Miller_experiment
check out the endosymbiotic theory in wikipedia. and its not that we came from it. we evolved. big difference.
Maybe. That is the current theory accepted by most people with knowledge in the subject.





The two lines of thinking (evolution and creation by god) are not incompatible, it just means that early people (like the people that wrote the bible) thought god acted in a different way than we have since learned (assuming there is a god of course, which is something that cannot be proved or disproved but has to be taken on faith). Fundamentalists tend to refuse to accept this whole line of thinking, of course, which is their right, but it doesn't make them right.





You can never know which is correct, at least not while existing as a human. There are a lot of things I want to know too, but never will. That is just part of the human condition. You gotta live with it.
We all started life as a zygote!
If this is what you believe, then nothing that I or anyone else can say is going to change your mind.