The stiffness that occurs at death, when actin and myosin molecules stay linked to each other in a contracted state, is due to a lack of
A) cAMP.
B) DNA.
C) RNA.
D) ATP.
E) tRNA.

Question

Quizplus · Accepted Answer

Stiffness at death, also known as rigor mortis, occurs due to a lack of ATP. ATP is required for muscle relaxation and without it, actin and myosin molecules remain linked and cause the stiffness observed in rigor mortis.

The Stiffness That Occurs at Death, When Actin and Myosin