The cleavage of endogenous opioids from pronociceptin,proenkephalin,and proopiomelanocortin would increase levels of all of the endogenous opioids except:
A) dynorphin B.
B) met-enkaphalin.
C) neoendorphin.
D) beta-endorphin.

Question

Quizplus · Accepted Answer

Dynorphin B is not derived from pronociceptin, proenkephalin, or proopiomelanocortin, so its levels would not be affected by the cleavage of any of these precursors. The other three endogenous opioids are derived from these precursors and would therefore increase in levels with their cleavage.

The Cleavage of Endogenous Opioids from Pronociceptin,proenkephalin,and Proopiomelanocortin Would Increase