Question

Consider the following analgesic.

What is the source of this structure?

• A. Opium
• B. Frog
• C. An endogenous compound present in the body
• D. Snake Venom

Hint:

Endomorphins are naturally occurring peptides in the body that bind to opioid receptors, producing pain relief and mood regulation effects. They play a crucial role in the body's natural pain management system.

Answer 1

The Correct Option is C

Step 1: Identifying the Structure The given structure represents endomorphin, which is an endogenous opioid peptide found in the human body. 

Step 2: Understanding the Source - Opium (Option A) is a natural source of morphine and related alkaloids but does not produce this specific structure. 
- Frog-derived peptides (Option B) exist, but this structure does not match known frog peptides. 
- Endogenous opioid peptides (Option C) such as endorphins, enkephalins, and dynorphins are naturally synthesized by the body and have similar structural motifs.
 - Snake venom (Option D) contains various neurotoxins and peptides, but this structure is not related to venom-derived compounds. 

Step 3: Selecting the Correct Answer 
Since endomorphins are naturally occurring peptides in the body that exhibit opioid analgesic effects, the correct answer is: An endogenous compound present in the body (Option C).