respiration is the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction.

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Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells). ... Note the number of oxygen, carbon dioxide, and water molecules involved in each 'turn' of the process

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respiration is the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction.

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We can understand the concept of respiration from this video https://gurushala.co/content/NjAzOQ==/detail

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श्वसन जैव रासायनिक प्रक्रिया है जिसमें एक जीव की कोशिकाएं ऑक्सीजन और ग्लूकोज के संयोजन से ऊर्जा प्राप्त करती हैं, जिसके परिणामस्वरूप कार्बन डाइऑक्साइड, पानी और एटीपी (कोशिकाओं में ऊर्जा की मुद्रा) निकलती है। ... प्रक्रिया की प्रत्येक 'बारी' में शामिल ऑक्सीजन, कार्बन डाइऑक्साइड और पानी के अणुओं की संख्या पर ध्यान दें।

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