The three main stages of cellular respiration and photosynthesis are: glycolysis, the citric acid cycle, and electron transport. The first stage of the cellular …show more content…
Then the sugar starts to produced in the chloroplasts providing plants with chemical energy and carbon to make all the major organic molecules of the cells. The process which the chemical energy of "food" molecules is released and partly taken in the method of ATP is through the cellular respiration, (BioCoach Activity 2013). During this process glucose is what sugar need to energize and help aerobic (oxygen is existing) or anaerobic (oxygen is lacking). There are existing cells that products sugar molecules and undertake cellular respiration in order to create ATP molecules. There are several that used oxygen and other do not. This will calls a set of chemical reaction to transform. This will involved two main stage to break down this process of glucose molecules such as aerobic respiration and glycolysis. The utmost important method on earth is when photosynthesis products over 500 billion metric tons of carbohydrates and its responsible for the oxygen in our …show more content…
During earth's present-days of life forms appear have evolved from ancestors reaching back to simplest one-cell organism back about four billion years ago. The idea of evolution provide scientific with three main sets of observable facts about life on earth: the enormous number of different life forms, the systematic similarities in anatomy and molecular chemistry within the diversity, and the sequence of change in fossils found in layers of rock that been formed over a billion years ago. According to the detail of the history of life on earth are being pieced together from the combined geological, anatomical, and molecular occur to the evidence. In the beginning, simple molecular have formed complex molecules that actually formed into cells that was capable of self-replication. About three billion years ago life on earth has existed. But a couple of simple molecules formed into cells that was capable of self-replication. According to scientist, the first two billion years of life, microorganisms was the only one existed- some are quite similar to bacteria and algae that exist in today world. The development of cells with nuclei is about a billion years ago, it was a big increase in the rate of evolution of increasing complex and multicelled organisms. The rate of evolution of new species has been uneven, since then the reflecting of rates have vary in change in the physical environment. When the environment