Respiration in Plants
Respiration in Plants PDF Notes, Important Questions And Synopsis
Respiration in Plants PDF Notes, Important Questions and Synopsis
SYNOPSIS
- Cellular respiration is the mechanism of oxidative break down of food materials within the cell to release energy and the trapping of this energy for the synthesis of ATP.
- Glycolysis is the common pathway seen in both aerobic and anaerobic respiration.
- The net gain of ATP during glycolysis is 4 ATP + 6 ATP = 10 ATP − 2 ATP = 8 ATP
- Fermentation is the process in which the incomplete break down of glucose takes place in the absence of oxygen.
- Alcohol Fermentation: Pyruvic acid is decarboxylated into acetaldehyde and carbon dioxide in the presence of the enzymes pyruvate decarboxylase and thiamine pyrophosphate.
- Lactic Acid Fermentation: Pyruvic acid accepts hydrogen from NADH2 and forms lactic acid.
- Tricarboxylic Acid Cycle: Net ATP Gain = 30 molecules
- Total Yield of ATP from Respiration = 36 ATP
- Electron Transport System
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Synthesis of ATP from ADP and inorganic phosphates in mitochondria with the help of ATP synthetase is called oxidative phosphorylation.
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Processes which involve breakdown and synthesis of substances, i.e. catabolism and anabolism, are called amphibolic pathways.
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The ratio of the volume of CO2 evolved to the volume of O2 consumed in respiration is called the respiratory quotient.
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