Q:

Why is respiration important?

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Quick Answer

Respiration is important because it produces energy that is essential for the normal functioning of the body. Respiration provides cells with oxygen and expels toxic carbon dioxide. The BBC notes that cells need energy for movement, multiplication, the synthesis of essential molecules and maintaining body temperature.

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Why is respiration important?
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Physiological respiration occurs across the respiratory system, which includes the upper and lower respiratory tracts. The upper respiratory tract is composed of the nasal cavity, sinuses, pharynx and larynx, while the lower respiratory tract includes the trachea, lungs, bronchi and the diaphragm. Physiological respiration is also known as ventilation and breathing, and it involves inhalation and exhalation processes. Ventilation occurs involuntarily, but a person can modify breathing. Healthline notes that respiration is important because the body cannot store oxygen. The respiratory system also warms, humidifies and filters air during gaseous exchange.

About.com reveals that energy production occurs in cells through the metabolic process of cellular respiration, which produces energy in the form of adenosine triphosphate (ATP). Cells harvest this energy from food in three stages, which are glycolysis, the citric acid cycle and electron transport. Fats contain more energy than proteins and carbohydrates. Wikipedia notes that cells use oxygen to produce energy through the process of aerobic respiration, which releases carbon dioxide as a waste product. Water is also released in metabolic respiration. Anaerobic respiration produces small amounts of energy in the absence of oxygen.

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Related Questions

  • Q:

    Why is respiration important for living things?

    A:

    Respiration is one of the requirements for living things because it is the process where organisms exchange oxygen and carbon dioxide. This is related yet different from cellular respiration, which is the process where individual cells convert oxygen into carbon dioxide while converting food to energy.

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  • Q:

    How does respiration occur in plants?

    A:

    Respiration, in which energy is released from carbohydrates for metabolic needs, takes place in plants through a process which can be expressed in a word equation as: glucose + oxygen = energy + carbon dioxide + water. The chemical equation for this process can be expressed as: C6H12O6 + 6O2 = energy + 6CO2 + 6H2O. Respiration, which is a breaking-down process that releases energy, can be viewed as the opposite of photosynthesis, which is a building-up process that takes in energy in the form of light and uses it to produce carbohydrates.

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  • Q:

    What is the energy from respiration used for?

    A:

    The energy from respiration is used to utilize stored energy within an organism's body when necessary. Cellular respiration involves the chemical release of stored glucose through oxidation.

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  • Q:

    What is the chemical formula for respiration?

    A:

    Respiration is a chemical reaction that can be expressed by the equation C6H12O6 plus 6O2 yields 6CO2 and 6H2O. This generally states that glucose and oxygen yield carbon dioxide and water. An aerobic reaction of this nature releases approximately 3,000 kilojoules per mole of material in the reaction.

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