Origin of Cells

The origin of life. Sometimes I think of how organisms such as human beings came about. All we know is that human beings are naturally produced by sexual reproduction and some times by asexual reproduction as well. We came from our parents but where did they come from? This continues on but where did it all begin? Was there only one species 3.5 billion years ago? Did all life branch off of one species?

There are two types of main cells which are known as eukaryotic and prokaryotic cells. Eukaryotic cells contain a nucleus and has many organelles such as mitochondrion, plasma membrane and golgi apparatus. Plant cells and animal cells are a type of eukaryotic cell. Prokaryotic cells have a simple structure unlike eukaryotic cells. They do no have a nucleus but they have a nucleoid which contains chromosomes. An example of a prokaryotic cell would be bacteria. Bacteria is where it all started because bacteria made simple organisms. It has been studied by scientists that 3.5 billon years ago the organisms had simple structures and then as centuries went by they got more complex. I recently watched a video by Stated Clearly called Can Science explain the Origin of Life? This video made me realize that we all might just be from the same ancestor but as time went by we seperated in different species. Then I thought that we branched off the same species however centuries later we now have different races, languages and cultures.

 

Image result for prokaryotic cells

Science Primer via Wikimedia

Comments

  1. Stella says:

    Very interesting blog touching on the evolutionary history of life. Sexual reproduction refers to the fusion of two different gametes (egg and sperm). Although now there are many procedures that assist with conception, in vitro fertilization is still very much sexual reproduction.

    According to Darwin, the last universal common ancestor (LUCA) is an evolutionary starting point from which all modern life descended from. You can learn more about it here http://news.nationalgeographic.com/news/2010/05/100513-science-evolution-darwin-single-ancestor/

  2. Brandon says:

    Do you think that the division of the human species into different races, languages, and cultures could lead to further speciation?

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