5 Questions
Which organisms exchange O2 with CO2 by simple diffusion over their entire body surface?
Sponges
What is the process of exchange of O2 from the atmosphere with CO2 produced by the cells called?
Respiration
What do insects use to transport atmospheric air within the body for gas exchange?
Tracheal tubes
Which harmful gas is released during catabolic reactions in organisms?
Carbon dioxide (CO2)
What is utilised by the organisms to indirectly break down nutrient molecules like glucose and derive energy?
Oxygen (O2)
Study Notes
Gas Exchange and Respiration
- Small organisms like unicellular organisms, simple multicellular organisms, and some invertebrates exchange O2 with CO2 by simple diffusion over their entire body surface.
Respiratory Process
- The process of exchange of O2 from the atmosphere with CO2 produced by the cells is called respiration.
Insect Respiratory System
- Insects use tracheae to transport atmospheric air within the body for gas exchange.
Cellular Respiration
- Carbon dioxide (CO2) is a harmful gas released during catabolic reactions in organisms.
Energy Derivation
- Cellular respiration is utilized by organisms to indirectly break down nutrient molecules like glucose and derive energy.
Test your knowledge of respiratory organs, breathing mechanisms, gas exchange, gas transport, regulation of respiration, and respiratory disorders. Explore the importance of oxygen utilization and carbon dioxide release in the catabolic reactions of organisms.
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