What is the term for the nine amino acids that the human body cannot synthesize and must obtain from the diet?

• A. Branched-chain amino acids
• B. Essential amino acids
• C. Nonessential amino acids
• D. Conditional amino acids

Answer: (B)

Verified step by step guidance

1. Understand the concept of amino acids: Amino acids are the building blocks of proteins, and they play a crucial role in various biological processes. They are categorized based on whether the human body can synthesize them or not.
2. Define essential amino acids: Essential amino acids are those that the human body cannot synthesize on its own. Therefore, they must be obtained through dietary sources.
3. Differentiate between the other types of amino acids: Nonessential amino acids can be synthesized by the body, while conditional amino acids are typically nonessential but may become essential under certain conditions, such as illness or stress.
4. Recognize the importance of essential amino acids: These amino acids are vital for protein synthesis, enzyme function, and overall health. Examples include lysine, leucine, and valine.
5. Conclude that the term for the nine amino acids the human body cannot synthesize and must obtain from the diet is 'essential amino acids.'