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Questions and Answers
Oxygen is utilized by organisms to break down nutrient molecules like glucose and derive energy
Oxygen is utilized by organisms to break down nutrient molecules like glucose and derive energy
True (A)
The process of exchange of O2 from the atmosphere with CO2 produced by the cells is called respiration
The process of exchange of O2 from the atmosphere with CO2 produced by the cells is called respiration
True (A)
Carbon dioxide (CO2) is released during the catabolic reactions in organisms
Carbon dioxide (CO2) is released during the catabolic reactions in organisms
True (A)
Breathing is commonly known as respiration
Breathing is commonly known as respiration
The mechanism of breathing varies among different groups of animals depending mainly on their habitats and levels of organization
The mechanism of breathing varies among different groups of animals depending mainly on their habitats and levels of organization
Flashcards
Cellular Respiration
Cellular Respiration
The process of using oxygen to break down nutrients like glucose and generate energy within living organisms.
Gas Exchange
Gas Exchange
The exchange of oxygen from the environment and carbon dioxide produced by cells within an organism.
Breathing (Ventilation)
Breathing (Ventilation)
The process of breathing, which involves the intake of oxygen and the release of carbon dioxide.
Carbon Dioxide (CO2)
Carbon Dioxide (CO2)
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Catabolism
Catabolism
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Study Notes
Respiration and Gas Exchange
- Oxygen (O2) is essential for organisms to break down nutrients, particularly glucose, to generate energy.
- Carbon dioxide (CO2) is a byproduct of these catabolic reactions and is considered harmful if accumulated.
- Continuous supply of O2 to cells is crucial, and CO2 produced must be expelled from the body.
- The process of exchanging O2 from the environment for CO2 produced by cells is termed breathing or respiration.
- Physical sensation of chest movement during breathing can be felt by placing hands on the chest.
Mechanisms of Breathing
- Breathing mechanisms differ across animal groups, influenced by habitat and level of biological organization.
- Lower invertebrates, such as sponges and coelenterates, exhibit simpler respiratory processes.
- The complexity of respiratory organs correlates with the organism's environmental adaptations and structural organization.
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