Question
Why do organisms take up oxygen and release carbon dioxide?
✓
Answer
a. At cellular level, organisms require energy to carry out different metabolic activities.
b. The energy is made available by oxidizing/breaking the food.
Therefore, oxygen is required by aerobic organisms for breaking the food and carbon dioxide is released as a byproduct of oxidation.
b. The energy is made available by oxidizing/breaking the food.
Therefore, oxygen is required by aerobic organisms for breaking the food and carbon dioxide is released as a byproduct of oxidation.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Explain the following terms by giving one example of each : Sub-kingdom
What is key? How is it helpful in studying biological classification?
Sharad touched a hot plate by mistake and took away his hand quickly. Can you recognize the tissue and its type responsible for it?
Name any two plants in which root caps are replaced by root pockets.
Crab and Snail both have a protective covering. Is it made up of the same material?
Why squamous epithelium is also called pavement epithelium?
Name the basic macromolecules present in the living organisms.
Why urinary tract infections are more common in females than males?
Distinguish between Rhodophyceae and phaeophyceae with respect to photosynthetic pigments and reserve food.