Which Best Describes "Rigor Mortis

question 67

Multiple Choice

Which best describes "rigor mortis"?

• A) Lack of ATP following death causes cross-bridges to remain tightly bound to actin.
• B) Lack of ATP following death causes calcium to remain in the cytosol, continuously stimulating cross-bridge cycling.
• C) Repeated, high-frequency action potentials to a skeletal muscle fiber causes sustained contraction following death.
• D) Following death, calcium-activated proteases degrade all proteins in skeletal muscle fibers, making muscles limp.
• E) Build-up of K⁺ in T-tubules causes constant, tetanic contractions of skeletal muscles that last for about 12 hours following death.

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Definitions:

RAM

Random Access Memory, a type of computer memory that can be accessed randomly, any byte of memory can be accessed without touching the preceding bytes.

Temporary

Pertaining to a limited period of time, not permanent.

Volatile

Referring to substances that easily evaporate at normal temperatures or, in financial markets, to investments subject to rapid and unpredictable changes in value.

Supercomputers

High-performance computing systems that are among the fastest and most powerful at any given time, used for complex simulations, data analysis, and scientific research.