THE ANCIENT ATMOSPHERE: cyanobacterias and oxygen

-


DOES CYANOBACTERIAS BEGUN THE OXYGENATION OF THE EARTH ?
   

According to the scientist observation and estimation, it was observed that during the first 2 billion years of earth existence, the atmosphere was without molecular oxygen, which can be termed to have been Anoxic ( i.e. without molecular oxygen). So as a result of this, it is certain that only organisms that can grow without oxygen can survive or able to live ( Anaerobic organisms). So therefore, autotrophic organisms that are capable of converting solar energy into chemical energy called Phototrophs are present within the billion years of the formation of the first earth.

With the above clues and evidence, we are sure to say that cyanobacteria which is also known as blue-green algae also evolved from these simple Phototrophs one billion years later. Cyanobacterias begun the oxygenation of the atmosphere.

The fact that Cyanobacterias ( the blue green algae) begun the oxygenation of the atmosphere, so the question am trying to answer is that, How then does the atmosphere looks like without molecular oxygen ? 

Let hear the readers views........ Drop your comments in the comments box.

Comments

Post a Comment

Popular posts from this blog

HISTORY TODAY: The three co - Founder Of Cell Theory

-
Image
      Three Co - Founders Of Cell Theory This section of this article will be a discussion basically on the three Co- founders of the cell theory. Here this paper shall be discussing basically on who are those that postulated the cell theory ( modern cell theory). Matthias schleiden ( 1804 - 1881) was a German botanist and co - founder of cell theory, along with theodor schwann and Rudolf Von Virchow. the image above represent Rudolf Von Virchow Born in Hamburg, schleiden was educated at University of jena,, but he developed his love and passion for botany into a full - time pursuit. Schleiden liked or habit to study plants structure under the microscope. So he became a professor of botany at the University of jena, there he wrote contribution to our knowledge of phytogenesis ( 1838), in which he stated that all parts of plant organisms are composed of cells,as it was discussed before. However, schleiden and schwann became the first to formulate what was then ...
Read more

DEVELOPMENT OF MULTICELLULAR ORGANISM: Process of Development

-
Image
                    Process Of Development    According to research and observations, scientist affirmed that there are four essential process by which a multicellular organisms is made, which are cell proliferation, cell specialization, cell interaction and cell movement. Cell proliferation       Cell proliferation refers to the process that result in an increase in the number of cells. It is a fundamental process among living organisms that is necessary for general development ( Embryonic development, organ growth and development as well as various physiological process).     This is the first process in the development of multicellular organisms which involves the growth and division of the cells. Here the cells divides through a process know mitosis ( Somatic cell division) producing two equal copies of themselves. During this process, growth factors signal pathways which ser...
Read more

NEW DISCOVERY : Muscle Cell Secret

-
Image
                         MUSCLE CELL SECRET A muscle fiber consists of just one cell, but many nuclei. A team at the MDC led by Professor Carmen Birchmeier has now shown just how varied these nuclei are. The study, which has been published in  Nature Communications , can help us better understand muscle diseases such as Duchenne muscular dystrophy. Usually, each cell has exactly one nucleus. But the cells of our skeletal muscles are different: These long, fibrous cells have a comparatively large cytoplasm that contains hundreds of nuclei.  But up to now, we have known very little about the extent to which the nuclei of a single muscle fiber differ from each other in terms of their gene activity, and what effect this has on the function of the muscle. A team led by Professor Carmen Birchmeier, head of the research group on Developmental Biology / Signal Transduction at the Max Delbrueck Cen...
Read more