Biology Chapter 17: Breathing and Exchange of Gases

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What is the process of exchange of O2 from the atmosphere with CO2 produced by the cells called?

Respiration

Which of the following respiratory organs are used by lower invertebrates like sponges, coelenterates, and flatworms for gas exchange?

Entire body surface

What is the main function of oxygen (O2) for organisms?

To release energy from nutrient molecules

Which chapter of biology does the text most likely originate from?

Breathing and Exchange of Gases

How do the respiratory mechanisms of lower invertebrates differ from higher animals?

Lower invertebrates exchange gases over their entire body surface

In the human respiratory system, the part starting with the external nostrils up to the terminal bronchioles is known as the:

Conducting part

Which of the following is NOT a structure used for gas exchange in animals?

Cuticle

What is the function of the epiglottis in the human respiratory system?

To prevent food from entering the larynx

Which of the following vertebrates use gills for respiration?

Fishes

What is the purpose of the pleural fluid in the human respiratory system?

To prevent friction on the lung surface

Test your knowledge on respiratory organs, mechanism of breathing, exchange of gases, transport of gases, regulation of respiration, and disorders of the respiratory system. Understand the utilization of oxygen and release of carbon dioxide by organisms.

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