Question

The most Poisonous of all waste products of metabolism is

• A. Urea
• B. Uric acid
• C. Ammonia
• D. Amino acids

Answer 1

The Correct Option is C

To solve this question, we need to identify the most poisonous waste product of metabolism.

1. Understanding Metabolic Waste Products:
- Urea: A less toxic waste product formed in the liver from ammonia, which is then excreted by the kidneys. It is less toxic than ammonia but still harmful in large amounts.
- Uric acid: Produced by the breakdown of purines (found in nucleic acids). It is excreted by some animals in a solid form and is less toxic than ammonia.
- Ammonia: A highly toxic waste product produced by most aquatic organisms and some terrestrial organisms. It is very poisonous and needs to be excreted quickly to avoid harm to the body.
- Amino acids: Building blocks of proteins and not a direct waste product, although they do contribute to the production of urea during protein metabolism.

2. Identifying the Most Poisonous Waste Product:
Among these, ammonia is the most toxic waste product. It is highly toxic and can be lethal if not excreted quickly in organisms.

Final Answer:
Option (C) Ammonia is correct.