ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 39, Problem 8TYU
SCIENTIFIC INQUIRY
Propose a hypothesis to explain how paramyosin enables clamshell muscles to remain contracted for long periods. Explain how you would test your hypothesis.
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Which statement best describes how an earthworm moves?
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Contracting setae while relaxing longitudinal and circular muscles
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Contracting longitudinal muscles in anterior sections forces fluid across the septum and into segments in the posterior sections
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Contracting longitudinal muscles which puts pressure on the hydrostatic skeleton and causes it constrict and elongate
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Simultaneous contraction of longitudinal and circular muscles within a segment
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Alternating contraction of longitudinal muscle in a posterior segment with contraction of circular muscles in the neighboring anterior segment
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Chapter 39 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 39.1 - Contrast the role of Ca2+ in the contraction of a...Ch. 39.1 - WHAT IF? Why are the muscles of an animal that has...Ch. 39.1 - Prob. 3CCCh. 39.2 - Prob. 1CCCh. 39.2 - Prob. 2CCCh. 39.2 - Prob. 3CCCh. 39.3 - Prob. 1CCCh. 39.3 - MAKE CONNECTIONS How is the lunar-linked rhythm of...Ch. 39.4 - How might associative learning explain why...Ch. 39.4 - Prob. 2CC
Ch. 39.4 - MAKE CONNECTIONS How might a learned behavior...Ch. 39.5 - Prob. 1CCCh. 39.5 - MAKE CONNECTIONS Balancing selection can maintain...Ch. 39.6 - Prob. 1CCCh. 39.6 - Prob. 2CCCh. 39 - During the contraction of a vertebrate skeletal...Ch. 39 - Prob. 2TYUCh. 39 - According to Hamiltons rule, A. natural selection...Ch. 39 - The binding of calcium to the troponin complex A....Ch. 39 - Curare, a substance that blocks the acetylcholine...Ch. 39 - Prob. 6TYUCh. 39 - Prob. 7TYUCh. 39 - SCIENTIFIC INQUIRY Propose a hypothesis to explain...Ch. 39 - Prob. 9TYUCh. 39 - Prob. 10TYUCh. 39 - FOCUS ON INFORMATION Learning is defined as a...Ch. 39 - Prob. 12TYU
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- Certain diseases cause the production of collagen that is weaker than normal. Predict how such diseases could affect the structure and function of gomphoses?arrow_forwardWhy does Phylum Nematomorpha only possess longitudinal muscles in their body? Explain.arrow_forwardCompare and contrast three features of an exoskeletonand an endoskeleton.arrow_forward
- Many Annelids have complex movement patterns using circular and longitudinal muscles. How is it that these musclęs, which need to contract against a rigid structure, is able to work for annelids which are soft bodied? O most annelids have a soft shell O most annelids have an endoskeleton O most annelids use a rigid cuticle O most annelids use a rigid bristles O most annelids use a rigid hydrostatic skeleton MacBook Pro 8.arrow_forwarddiscuss how specialized muscle contributed to the success of extinct species.arrow_forwardRelate the structure of insect flight muscles to their function.arrow_forward
- What disadvantages associated with having exoskeletons did arthropods have to overcome to allow natural selection to favor this trait? How did they circumvent these problems?arrow_forwardgive examples of animals with hydrostatic skeleton that are soon changed to exoskeleton or endoskeleton when they growarrow_forwardWhy does the larval stages of insects exhibit a softer and thinner exoskeleton than their adult forms?arrow_forward
- Scientific understanding of the evolution and phylogeny of the Arthropoda has changed enormously in recent years. Briefly explain why this is truearrow_forwardDiscuss the idea that every evolutionary adaptation has both advantages and disadvantages, using each of the following as an example: (a) cephalization,(b) the arthropod exoskeleton, and (c) segmentation with specialization.arrow_forwardWhich statement about this diagram is NOT correct? A. Each pink sphere is an actin protein molecule B. The red balls are troponin C. The green things are myosin D. The blue line is tropmyosin E. Ca++ ions attach to the myosin heads to initiate the powerstrokearrow_forward
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