Which of the Following Statements About Sigmatropic Reactions Is Not

question 15

Multiple Choice

Which of the following statements about sigmatropic reactions is not true?

• A)A sigmatropic reaction is an intramolecular pericyclic reaction.
• B)In a sigmatropic reaction,s bond is broken in one of the reactants.
• C)The p bonds rearrange in a sigmatropic reaction.
• D)The number of p bonds in the reactants and product differs in a sigmatropic reaction.

---

Definitions:

Serum

Fluid portion of blood after the removal of fibrin and blood cells.

Muscle Contraction

The shortening and/or development of tension within a muscle, allowing for movement and force generation.

Blood Clotting

The process by which blood changes from a liquid to a gel, forming a clot to stop bleeding.

Nerve Impulse

An electrical signal that travels along the nerve fiber, enabling communication between neurons or between neurons and muscles.