Udp-glucose pyrophosphorylase works by this mechanism: group of answer choices it adds a phosphate group to glucose from utp, leaving behind udp. it adds a ump molecule to glucose-1-phosphate by splitting out pyrophosphate. it adds a pyrophosphate group to glucose, using utp. it adds a udp molecule to glucose by splitting out phosphate. none of these

The correct answer is it adds a UMP molecule to glucose-1-phosphate by splitting out pyrophosphate.

Explanation:

UDP glucose pyrophosphorylase enzyme also known as UTP-glucose-1-phsphate uridylyltransferase.

     This enzyme plays an important role during synthesis of glycogen also known as glycogenesis.

    During the reaction the enzyme UDP glucose pyrophosphorylase transfer uridine monophosphate to glucose-1-phosphate resulting in the formation of UDP glucose along with the release of pyrophosphate moiety.

      Glucose-1-phosphate+UTP⇆UDP-glucose+ppi

the answer is option a.

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