1. What is respiration? How does it court
Answers
Respiration is the term for the exchange of oxygen from the environment for carbon dioxide from the body's cells. The process of taking air into the lungs is called inhalation or inspiration, and the process of breathing it out is called exhalation or expiration.
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• All living organisms need a constant supply of energy.
• Respiration is the process of releasing energy through the breakdown of nutrients such as glucose.
• Respiration can be aerobic or anaerobic.
• Aerobic respiration takes place continuously in both plants and animals.
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• It occurs through a process known as cellular respiration.
• It is of 2 types:
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• Aerobic respiration uses oxygen to break down glucose.
• Aerobic respiration can be described as the process of releasing energy through the oxidation of glucose molecules.
• Aerobic respiration releases lots of energy from each glucose molecule by breaking it down completely into carbon dioxide and water.
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• Anaerobic respiration takes place without oxygen.
• Anaerobic respiration is the incomplete breakdown of glucose.
• This process releases much less energy per glucose molecule than aerobic respiration and produces lactic acid.
• Anaerobic respiration occurs when cells have insufficient oxygen for aerobic respiration to occur.