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Both Cellular Respiration and Photosynthesis are interdependent. In their chemical formulas:

  • Photosythesis: CO2+H2O yield sunlight O2+C6H12O6
  • Cellular Respiration: O2+C6H12O6 yield ATP CO2+H2O
There are many theories such as the heterotrophic and autotrophic hypothesis. There is also the spontaneous generation theory however that was disproved by Redi and Pasteur. The most accepted origin of life is the heterotrophic theory.
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What came first in evolution cellular respiration or photosynthesis?

Cellular respiration likely evolved before photosynthesis. Early prokaryotic organisms likely developed cellular respiration to generate energy from organic molecules. Photosynthesis evolved later in some prokaryotic organisms as a way to use sunlight to make energy.


How does cellular respiration depend on photosynthesis?

Aerobic respiration requires oxygen to produce energy and expels carbon dioxide. This ultimately depends on photosynthesis, because plants take the carbon dioxide out of the air and use it for photosynthesis, which expels oxygen into the air as waste.


What are the difference between photosythisis and cellular respiration?

First of all, photosynthesis can only occur in plants. Animals are incapable of performing this process. Cellular respiration ,however, can occur in both plants and animals. Ironically, the two processes are alike in a special way: the formula for cellular respiration is the exact reverse of the formula for photosynthesis. See the 'Related Questions' link on this page for the formulas. Photosynthesis is an anabolic process, whereas cellular respiration is a catabolic process. In other words, photosynthesis involves the synthesis of organic compounds while cellular respiration involves the breakdown of organic compounds. Although photosynthesis is anabolic and cellular respiration is catabolic, both processes require an input of energy at various stages. For example, during the first stage of cellular respiration, glycolysis, an input of ATP (adenosine triphosphate) is required in order to breakup glucose into two pyruvate molecules. It is important to note that during glycolysis, 4 ATP are produced for every 2 ATP used, resulting in a net gain of 2 ATP.


What are the first stage of cellular respiration?

The first stage in cellular respiration is known as Glycolysis.


What is the process by which the chemical energy of food molecules is released?

The first step of the process is the digestion.


What the first step in cellular respiration is?

The first step to respiration is glycolysis.


Cellular respiration allows an organism to get energy from where?

Cellular respiration allows an organism to get energy from nutrients, typically glucose, by breaking them down in the presence of oxygen to produce ATP (adenosine triphosphate), the main energy currency of cells. This process occurs in the mitochondria of cells and releases energy in the form of ATP for various cellular activities.


Explain why photosynthesis and cellular respiration are considered to be paired processes?

Well a first give away is that one is endothermic and one is exothermic. Also photosynthesis is just the flip around of the cellular respiration process but just add energy and the catalyst used


What occurs in the first part of cellular respiration?

Glycolysis is the first part of respiration in the cytoplasm.


The first pathway of cellular respiration is?

glycolysis.


What is the first step to cellular respiration?

glycolysis


What is the first stage of the cellular respiration?

Glycolysis!