Which of the following is a neutral amino acid?

🔑Key Points:
-Glycine is a neutral amino acid.
-​It is hydrophilic in nature.
-It has a single hydrogen atom in its side chain.
-The molecular formula for glycine is C2H5NO2.
-It has no optical activity.
-It does not have a chiral carbon in its structure.
-In the year 1820, glycine was extracted from a material known as gelatin.
-Amino acids are required for all metabolic functions and human life processes.

🔴Additional Information:
-Glutamic acid
-​It is an amino acid used to form proteins.
-In the body, it turns into glutamate.
-It is a non-essential nutrient for humans, meaning that the human body can synthesize enough for its use.
-Lysine
-It is an essential amino acid.​
-The human body cannot make lysine, so it must be eaten in the diet.
-It is required for growth and tissue repair.
-Valine
-​It is an aliphatic and extremely hydrophobic essential amino acid.
-It promotes muscle growth and tissue repair.
-It is a precursor in the penicillin biosynthetic pathway.