In the blood clotting reaction, _______ is added to a glutamic acid in preprothrombin.Multiple choice question.sulfurhydrogen peroxidewatercarbon dioxide

To answer the question regarding the blood clotting reaction and what is added to a glutamic acid in preprothrombin, we can analyze the options given:

1. Understanding the Context: The question pertains to the biochemical reaction involved in blood clotting, where certain modifications are made to proteins.

2. Examining the Options:

   • Sulfur: Not relevant to the addition in this context.
   • Hydrogen Peroxide: Typically a reactive oxygen species, not related to glutamic acid modification.
   • Water: This is a solvent but does not participate in the biochemical modification of glutamic acid in this context.
   • Carbon Dioxide: Also not involved in the direct chemical modification required for blood clotting.

The correct answer pertains to biological processes where a carboxyl group is added to glutamic acid, usually in the form of vitamin K, which aids in the modification of glutamic acid residues in proteins involved in coagulation.

Final Answer

None of the provided options directly corresponds to the addition relevant to glutamic acid in preprothrombin in the blood clotting process. However, if the intent is to select a typical biochemical modification, one may consider "water" in general biochemistry, but it's not technically correct in the context of the question. If referring to vitamin K, that option is missing.