Process of Respiration in Plants and Animals

Process of Respiration in Plants and Animals

Respiration in Plants and Animals We will talk today about the process of respiration in plants and animals covering all the different aspects of the process.  DEFINITION Respiration may be defined as the oxidation of organic substances, with the release of energy within the cell.   RESPIRATORY SUBSTRATE Generally, all protoplasmic substances, which release energy after oxidation are termed respiratory substances, but precisely respiratory substrate are those, which on oxidation break down to carbon dioxide and water.  The chief respiratory substrate is glucose.   SITE OF OCCURRENCE The external respiration occurs in the different respiratory organs of the animals for the gaseous exchange, and internal respiration occurs in the mitochondria for the release of the energy.   RESPIRATION IS A OXIDATIVE PROCESS C6H12O6 + 6O2 = 6 CO2 + 6H2O + 686 Kilocalorie heat. Here the glucose molecule is broken down with the help of oxygen to produce carbondioxide and water.  And since in this process the dry weight is decreased so this process is called oxidative process.   EXTERNAL RESPIRATION The external respiration is the...
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What is the Process of Photosynthesis

What is the Process of Photosynthesis

Hi Viewers, Today we are going to discuss about the the process of photosynthesis which is a very important and interesting chapter.  We will start with the definition and then dig deeper into it. Photosynthesis Definition: Photosynthesis is a photochemical, biochemical and oxidoreductive process by which the green plants manufacture carbohydrate type of food by combining carbondioxide and water in the presence of sunlight and chlorophyll with the consequent evolution of oxygen.   Site of occurrence: Photosynthesis occurs where there is a presence of green, hence no green no photosynthesis.  The usual site of the process is in which is housed in the chloroplastid. The leaves look green because of the presence of chlorophyll in the chloroplasts of the mesophyll tissue of leaves.   Structure of chloroplastid: Each chloroplast is surrounded by two unit membranes.  Under high power microscope the chlorophyll reveals two dissimilar regions.  The stroma and grana. Stroma:  It is the proteinacious matrix of chloroplast.  It contains starch granules or droplets of starch and lipids.  The stroma in general...
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