If "all cells come from cells" where did the first cell come from?

Look up abiogenesis in the link below. Life as we know it, is a series of chemical reactions. Extremely complex in their interactions, but still chemical in nature. What we call life can be extremely broad in nature. Some say viruses are life, some don't. There are even simpler replicating proteins, called Prions, which cause among other diseases, Mad Cow Disease. Are these life? Maybe, maybe not. But they are a continuation of the low end of the spectrum of complexity. In my opinion, a virus is certainly a form of life, in the broad sense of the meaning. It replicates, have DNA or RNA, is capable of mutation and is under the influence of natural selection. Some viruses are cellular in structure, they have a protein shell, core of DNA/RNA, functional proteins (such as is used to "drill" into cells) etc. They are just very simple. Urey and Miller showed that it is possible to "create" amino acids artificially, so it is clearly possible that these conditions could have occured in the early primordial soup of Earth. Proteins are just amino acids joined together, Prions are just particular proteins. DNA and RNA consist of amino acids and inorganic molecules in a complex array. Could viruses have developed from RNA accidentally binding to some proteins, giving it an advantage over other non-bound RNA? Could prokaryotic cells have developed simply by viruses and prions combining? All of this had over a billion years to occur. The Earth is 5 billion years old. Life began about 3.5 billion years ago. .

The "scientific" answer is that cells originated from amino acids in a "soup-like" environment- think hot form lava, and salty water fro the ocean that somehow clumped together and started functioning as an organisms. Viruses are generally not considered to be living because dont meet the requirement to have life; mainly they cannot reproduce on their own

The theory of evolution is a mare hypothesis that can not be believed or accepted. There nothing called first or second cell. God created every thing as a whole from nothing, that is to say nothing was like any thing before his creation. Living thing them descended from the first creatures, may develop to adapt themselves to new environment but nothing change in their original structure.

Search for "Miller experiment" in google, you're going to have a big answer (that I'm not going to copy here), about the cell origins. Millions years ago, the climate of the world was totally diferent, not oxygen in the atmosfere (it was of hydrogen). A lot of electric discharges all over, and in the water the most important elements: Carbon, Hydrogen, Oxygen, Nytrogen, Phosphorus and Sulfure. The aminoacides were formed by random reactions (lab tested and proven) and after that everything else developed slowly for millions of years, until the very first cell appears.

Eukaryotic cells formed when prokaryotic cells got together and worked well, like our mitochondria. Prokaryotic cells came about when proteins formed DNA in the primordial ooze. As for viruses, they are life, but in a whole different group than cells. They're considered life since they grow and have DNA and so forth.

A CIRCLE DOES'T HAVE AN END!!! I don't think any scientist can give you an answer to your first question about the origin of life. If you belief in God the creator, be Him the answer. And i don't quite get it for your 2nd question. Are viruses really "cells"? They are something like crystal outside organisms, not even considered as life.

Long before eukaryotic cells, there were prokaryotic cells. The exact mechanism by which the first cell arose is not clearly understood. The most prominent hypothesis, abiogenesis, is being studied.

There is a theory about the smart molecule that could self replicate in the right conditions. RNA. RNA can serve as a template for its own replication so when it is in the presence of a primer and the correct enzymes and nucleotides it can make a copy of itself. Scientists think that the first cell originated when RNA molecule got trapped inside of a lipid membrane (micel or liposome) and evolved separate parts from there.

scientists are still trying to figure it out, they have theories, but not backed up by much evidence...therefore nothing is proven as yet