Question

What are essential amino acids ?

Hint:

Essential Amino Acids: Leucine, Isoleucine, Valine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan Remember: Essential amino acids must be supplied through food because the human body cannot produce them adequately.

Answer 1

Concept: Amino acids are the building blocks of proteins. They are joined together through peptide bonds to form proteins, which perform numerous structural and functional roles in living organisms. The human body requires various amino acids for growth, repair of tissues, enzyme formation, hormone synthesis, and many other physiological functions. Based on the ability of the body to synthesise them, amino acids are classified into:

• Essential amino acids

• Non-essential amino acids

Step 1: Understanding essential amino acids. Certain amino acids cannot be produced by the human body in adequate quantities. Since the body cannot synthesise these amino acids according to its requirements, they must be supplied through food. Such amino acids are called essential amino acids. Therefore, quote Essential amino acids are those amino acids that must be obtained from the diet because the body cannot synthesise them in sufficient quantities. quote

Step 2: Importance of essential amino acids. Essential amino acids are necessary for:

• Growth and development

• Formation of proteins

• Repair of damaged tissues

• Synthesis of enzymes and hormones

• Proper functioning of the immune system
A deficiency of essential amino acids may lead to impaired growth and various health disorders.

Step 3: Examples of essential amino acids. Some important essential amino acids are: Valine Leucine Isoleucine Lysine Methionine Phenylalanine Threonine Tryptophan These amino acids must be supplied through protein-rich foods such as milk, eggs, pulses, fish, meat, and soy products.

Step 4: Distinguishing from non-essential amino acids. Non-essential amino acids are those that can be synthesised by the human body. Examples include: Glycine Alanine Aspartic Acid Thus, the key difference lies in whether the body can produce the amino acid on its own.

Final Definition: \[ \boxed{ \text{Essential amino acids are those amino acids which cannot be synthesised by the body in sufficient amounts and must be obtained through the diet.} } \]