Biology
NULL
Medium
Question
Rigor mortis i.e, stiffening of body after death results from __________?
A
Accumulation of rigid proteins molecules in sarcoplasm.
B
Unavailability of ATP, which is necessary to break the link between actin and myosin.
✓ Official correct answer
C
Decrease in body temperature after death.
D
Death of tissue due to unavailability of O2.
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
Accumulation of rigid proteins molecules in sarcoplasm.
No member explanations yet for this option.
B
Unavailability of ATP, which is necessary to break the link between actin and myosin.
No member explanations yet for this option.
C
Decrease in body temperature after death.
No member explanations yet for this option.
D
Death of tissue due to unavailability of O2.
No member explanations yet for this option.
Explanation
Rigor mortis, the stiffening of the body after death, occurs because ATP is no longer available to break the cross-bridge link formed between actin and myosin filaments, leaving the muscles locked in a contracted state.