Question

Out of the following identify the metabolic wastes :
Oxygen, carbon dioxide, urea, glucose, fatty acids, ammonia

Answer 1

Metabolic waste

1. Metabolic waste is a substance that is left over after the metabolic process that can not be used by organisms and must be removed by the body.
2. Oxygen is produced in plants during photosynthesis as a by-product. However, it's not a waste but required in respiration.
3. Carbon dioxide and water produced during the metabolic breakdown of substances is eliminated through the lungs. Extra water is also eliminated through kidneys and sweat.
4. Glucose is not a waste and is required for the process of respiration.
5. Urea is produced as the result of protein metabolism.
6. Fatty acids are substrates that are needed in the body's metabolisms.
7. Ammonia is a metabolic waste produced by amino acid breakdown.

Thus, out of the given terms, carbon dioxide, urea, and ammonia are metabolic wastes.