Question

fill in the blank question \boxed{} is a component of creatine. need help? review these concept resources. read about the concept

Explanation:

Creatine's structure and synthesis: Creatine is synthesized in the body from arginine, glycine, and methionine. The guanidino group (from arginine) is a key structural component of creatine. So molecules like arginine (providing the guanidino part), glycine, or methionine are components in its synthesis (and arginine contributes the guanidino moiety to creatine's structure).

Answer:

Guanidino group (or Arginine, Methionine, Glycine - among these, the guanidino group from arginine is a key component; also, creatine is synthesized from arginine, glycine, and methionine, so any of these or the guanidino group can be correct. A common answer here is "Arginine" (or "Guanidino group", "Glycine", "Methionine" - but Arginine is a common component to cite as it provides the guanidino moiety). For a precise answer, the guanidino group (from arginine) is a component, but often "Arginine" is accepted as a component (since creatine is made from arginine, glycine, and methionine). So a typical answer is Arginine (or Guanidino group, Glycine, Methionine).