When a person dies, muscles become rigid and fixed in position

When a person dies, muscles become rigid and fixed in position

bio 120 chapter 19 and 27
  1. When a person dies, muscles become rigid and fixed in position, a condition known as rigor mortis. Rigor mortis occurs because muscle cells are no longer supplied with ATP. Also, calcium flows freely into dying cells. Explain, in terms of the mechanism of muscle contraction described in this chapter, why the presence of calcium and the lack of ATP would cause muscles to become rigid, instead of limp, after death.
  2. Using the theories of population ecology, justify the establishment of fishing limits that are based on the number and the size of the fish.

NOTE: the textbook we’re using is called “Campbell essential with biology 5th edition”- only choose to complete this assignment if you’re 100% sure what you’re doing.

– 1-2 paragraph per question please, thank you.

Absolutely no copyright! thank you.

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bio 120 chapter 19 and 27

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