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Photosynthesis Essay

Words: 309, Paragraphs: 8, Pages: 2

Paper type: Essay

All living organisms need the energy for the existence on our planet. Photosynthesis and cellular respiration are fundamental reactions that support normal course of all life processes in the organism. Though the passing of photosynthesis and cellular respiration is interrelated, their functions in production of energy utterly differ.

In order to open the significance of these chemical processes to all life, we’ll describe their character and differences that exist between them. At the base of every food chain are organisms, so called “producers”, which make food from components readily available in their environment. All living organisms are constituted of cells. Life processes in a cell are based on molecular interactions. Sells of plants contain chloroplasts that use chlorophyll to take the energy from sunlight. Then they combine it with water and carbon dioxide to create oxygen and glucose. This reaction is called photosynthesis.

Other cell parts in cell which are called the mitochondria make use of the glucose molecule. They break glucose molecule into atoms, and by mixing it with oxygen atoms, create carbon dioxide, water and energy. In new form energy can be used by all cells. This reaction is called cellular respiration. This energy is stored in a special molecule ATP which is sent to the other cells in the organism to supply them with an energy source.

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Photosynthesis and cellular respiration have three main differences that exist between these two chemical processes:

1.      Cellular respiration happens only in animals.

2.      The precursors of photosynthesis are carbon dioxide, water and energy (from the sunlight). The product is glucose. Cellular respiration is opposite reaction.

3.      All steps in both reactions are carried out by different enzymes.

Photosynthesis and cellular respiration play significant role in existence of all living organisms on the planet. Supplying energy to the cells they carry out is the main process, which we call life.

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