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Respiration, Respiration involves, , () Gaseous exchange : Intake of oxygen from the atmosphere and release of, CO, — Breathing, , (i) | Breakdown of simple food in order to release energy inside the cell —> Cellular, , Respiration, Breakdown of Glucose by various pathways, Glucose, C.H)0,, , In cytoplasm, , Pyruvic Acid + Energy, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Ethanol] + |Co,}+ Energy Lactic acid Co, +, ee + Water, Fermentation : Process of Energy a, conversion of Pyruvic acid Accumulation of energy., into ethanol, CO, and energy lactic acid causes, by Yeast muscle fatigue It occurs, after rigorous exercise., Respiration, Aerobic Anaerobic, * Takes place in the presence of * Takes place in the absence of, oxygen oxygen, * Occurs in mitochondria * Occurs in cytoplasm, * End products are CO, and H,O * End products are alcohol or lactic, * More amount of energy is released acid., , * Less amount of energy is released.