Which of the following amino acids is involved in the synthesis of creatine, an important energy source for muscles?

A Glycine
B Arginine
C Methionine
D All of the above ✓

Explanation

Creatine is synthesized from glycine, arginine, and methionine. This process occurs in the liver and kidneys, and creatine is then transported to muscles, where it plays a crucial role in energy production.

Source

Lehninger Principles of Biochemistry
Metabolic and Nutritional Disorders Amino Acid Metabolism Creatine Synthesis Easy MEDICAL Confidence: high