Fibrinogen can be classified as a(an)________ because it circulates in the bloodstream in an inactive form until it is converted to its active form when needed.

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Fibrinogen is a zymogen, also known as a proenzyme, because it is an inactive precursor that is converted to its active form in response to specific stimuli. In this case, fibrinogen is converted to fibrin during blood clotting. Amino acids, coenzymes, enzymes, and lipids are not appropriate classifications for fibrinogen.

Fibrinogen Can Be Classified as A(an)________ Because It Circulates in the Bloodstream