EP CONNECT ONLINE ACCESS FOR BIOLOGY
20th Edition
ISBN: 9781260494655
Author: Raven
Publisher: MCG COURSE
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Chapter 45, Problem 1S
Summary Introduction
To determine:
Whether it would be better to make a space-exploration vehicle with a hydrostatic skeleton or an exoskeleton for a planet with gravity greater than Earth and why.
Introduction:
In hydrostatic skeleton, the animal’s body has a fluid-filled cavity. Contraction of this cavity helps in locomotion like in earthworms. However, in the animals with an exoskeleton, the body has a hard protective outer layer made of chitin called the exoskeleton like in insects.
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3) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle spasms. This drug acts on specific skeletal muscles to (1) block the release of Ca2+ ions from the sarcoplasmic reticulum, (2) inhibit the pivoting ability of the myosin heads of the thick filaments, and (3) block the production of ATP by the mitochondria in skeletal muscles. By using this drug, contraction of certain skeletal muscle fibers is reduced, which keeps those muscles from producing spasms.
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2) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle spasms. This drug acts on specific skeletal muscles to (1) block the release of Ca2+ ions from the sarcoplasmic reticulum, (2) inhibit the pivoting ability of the myosin heads of the thick filaments, and (3) block the production of ATP by the mitochondria in skeletal muscles. By using this drug, contraction of certain skeletal muscle fibers is reduced, which keeps those muscles from producing spasms.
In the above scenario, Fremtol’s effect of blocking the release of Ca2+ ions from the sarcoplasmic reticulum would most directly prevent which the following?
a. activation of tropomyosin
b. activation of troponin
c. activation of actin
d. All of the above
e. None of the above
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Chapter 45 Solutions
EP CONNECT ONLINE ACCESS FOR BIOLOGY
Ch. 45.1 - Compare hydrostatic skeletons, exoskeletons, and...Ch. 45.1 - Explain how animals with hydrostatic skeletons...Ch. 45.2 - Prob. 1LOCh. 45.2 - Prob. 2LOCh. 45.2 - Prob. 3LOCh. 45.3 - Prob. 1LOCh. 45.4 - Prob. 1LOCh. 45.4 - Prob. 2LOCh. 45.4 - Prob. 3LOCh. 45.5 - Prob. 1LO
Ch. 45.5 - Describe how friction and gravity affect...Ch. 45.5 - Prob. 3LOCh. 45 - Prob. 1IQCh. 45 - Exoskeletons and endoskeletons differ in that a....Ch. 45 - Worms use a hydrostatic skeleton to generate...Ch. 45 - Bone develops by one of two mechanisms depending...Ch. 45 - Which of the following statements best describes...Ch. 45 - Motor neurons stimulate muscle contraction via the...Ch. 45 - Prob. 6UCh. 45 - If you wanted to study the use of ATP during a...Ch. 45 - Place the following events in the correct order....Ch. 45 - You take X-rays of two individuals. Ray has been a...Ch. 45 - You have identified a calcium storage disease in...Ch. 45 - How do the muscles move your hand through space?...Ch. 45 - How can osteocytes remain alive within bone? a....Ch. 45 - Swimming underwater using forelimbs for propulsion...Ch. 45 - If a drug inhibits the release of ACh, what will...Ch. 45 - Prob. 1SCh. 45 - Prob. 2SCh. 45 - The nerve gas methylphosphonofluoridic acid...Ch. 45 - If natural selection favors the evolution of wings...
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