Question

Which of the following is not a metabolic waste?

• A. Amino acid
• B. Ammonia
• C. Urea
• D. All of these

Answer 1

The correct option is A

Amino acid

The correct option is A.

Explanation of the correct option:

1. Metabolic wastes are the end products of the metabolic processes which can not be used by the organism.
2. Amino acid is not a metabolic waste since it is a nutrient and is utilized by the organism.

Explanation of the incorrect option:

Option B:

1. Ammonia is the end product of protein metabolism.
2. It is highly toxic and needs to be excreted from the body of the organism.
3. Hence, ammonia is a metabolic waste.

Option C:

1. Urea is also an end product of the protein metabolism.
2. Although it is less toxic than ammonia, still it is needed to be excreted out of the body.
3. Hence, urea is also a metabolic waste.

Option D: Since amino acid is not a metabolic waste, all of these can not be the correct answer.

Final answer: Amino acid is not a metabolic waste.