What would be the result if the administration of a drug sequesters all the ATP in a cell?
A)All cross-bridges will remain tightly bound to actin.
B)Calcium will remain in the cytosol,continuously stimulating cross-bridge cycling.
C)Repeated,high-frequency action potentials will be fired at a skeletal muscle fiber causing sustained contraction.
D)Calcium-activated proteases degrade all proteins in skeletal muscle fibers,making muscles limp.
E)A build-up of K⁺ in T-tubules will cause constant,tetanic contractions of skeletal muscles.

Question

Quizplus · Accepted Answer

Sequestering all the ATP in a cell would prevent the detachment of myosin heads from actin filaments, causing cross-bridges to remain tightly bound. ATP is necessary for the release of myosin heads from actin, allowing muscle relaxation. Without ATP, muscles would be stuck in a contracted state.

What Would Be the Result If the Administration of a Drug