Chapter Review:
- The process of breakdown of food in the cell with the release of energy is called cellular respiration.
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The process of breakdown of food in the cell with the release of energy is called cellular respiration.
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Food can also be broken down , without using oxygen.This is called anaerobic respiration.
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Some organisms such as yeast that can survive in the absence of air. they are called anaerobes.
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Yeasts are used to make wine and beer.
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The taking in of air rich in oxygen into the body is called inhalation
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Giving out of air rich in carbon dioxide is known as exhalation. .
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The number of times a person breathes in a minute is termed as the
breathing rate. -
An adult human being at rest breathes in and out 15–18 times in a minute.
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Insects have a network of air tubes called tracheae.
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Increased physical activity enhances the rate of breathing.
