Biochemistry: Concepts and Connections (2nd Edition)
2nd Edition
ISBN: 9780134641621
Author: Dean R. Appling, Spencer J. Anthony-Cahill, Christopher K. Mathews
Publisher: PEARSON
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Chapter 7, Problem 19P
A few hours after the death of an animal, the corpse will stiffen as a result of continued contraction of muscle tissue (this state is called roof mortis). This phenomenon is the result of the loss of ATP production in muscle tissue.
a. Consult Figure 7.482 and describe, in terms six-step model of muscle contraction, how a lack of ATP in sarcomeres would result in rigor mortis.
b. The Ca2+ transporter in sarcomeres that keeps the [Ca2+] ~ 10-7 M requires ATP to drive transport of Ca2+ ions across the membrane of the sarcoplasmic reticulum. How would a loss of this Ca2+ transport function result in the initiation of rigor mortis?
c. Rigor mortis s maximal at ̀´ 12 hrs after death by 72 hrs is no longer observed. Propose an explanation for the disappearance of rigor mortis after 12 hrs.
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Chapter 7 Solutions
Biochemistry: Concepts and Connections (2nd Edition)
Ch. 7 - Prob. 1PCh. 7 - Certain antibodies have been shown to bind only to...Ch. 7 - Antibodies raised against a macromolecular antigen...Ch. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10P
Ch. 7 - Prob. 11PCh. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Suppose your biking partner claims that...Ch. 7 - Prob. 15PCh. 7 - An antibody has been isolated that binds to...Ch. 7 - A typical relaxed sarcomere is about 2.3 m in...Ch. 7 - Each gram of mammalian skeletal muscle consumes...Ch. 7 - A few hours after the death of an animal, the...
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