Question

Total number of essential amino acid among the given list of amino acids is _______.
Arginine, Phenylalanine, Aspartic acid, Cysteine, Histidine, Valine, Proline

Answer 1

Correct Answer: 4

The essential amino acids are those that cannot be synthesized by the human body and must be obtained through diet. In the provided list, we need to identify which amino acids are essential:

• Arginine - Semi-essential; can be essential for the young.
• Phenylalanine - Essential.
• Aspartic acid - Non-essential.
• Cysteine - Non-essential (conditionally essential).
• Histidine - Essential.
• Valine - Essential.
• Proline - Non-essential.

Based on this, the essential amino acids from the list are: Phenylalanine, Histidine, and Valine. The total number of essential amino acids identified is 3. The range provided is 4,4, but the calculated number of essential amino acids is 3, which indicates an error or misinterpretation in the expectation range.

Answer 2

Step 1: Identify essential amino acids

Essential amino acids are those that cannot be synthesized by the human body and must be obtained from the diet. From the given list:

1. Arginine - Essential.
2. Phenylalanine - Essential.
3. Histidine - Essential.
4. Valine - Essential.
5. Aspartic acid, Cysteine, and Proline are non-essential.

Step 2: Count essential amino acids

Essential amino acids in the list = 4.

Final Answer: 4.