Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Chapter 29, Problem 16RQ
The filaments of skeletal muscle are moved by free energy derived from the hydrolysis of ATP. During sustained muscle contraction ATP levels remain fairly constant, while levels of creatine phosphate fall. Explain why this is so. Under what circumstances is an oxygen debt incurred during muscle contraction?
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Chapter 29 Solutions
Loose Leaf For Integrated Principles Of Zoology
Ch. 29 - The arthropod exoskeleton is the most complex of...Ch. 29 - Distinguish between epidermis and dermis in...Ch. 29 - Prob. 3RQCh. 29 - As naked apes humans lack the protective...Ch. 29 - Prob. 5RQCh. 29 - Prob. 6RQCh. 29 - What is the difference between endochondral and...Ch. 29 - Discuss the role of osteoclasts, osteoblasts,...Ch. 29 - The laws of scaling tell us that doubling the...Ch. 29 - Prob. 10RQ
Ch. 29 - Prob. 11RQCh. 29 - Prob. 12RQCh. 29 - What functional features of molluscan smooth...Ch. 29 - Prob. 14RQCh. 29 - While the sarcoplasmic reticulum of muscle was...Ch. 29 - The filaments of skeletal muscle are moved by free...Ch. 29 - During evolution, skeletal muscle became adapted...Ch. 29 - A weight lifter decides to go jogging with a...
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- Explain why (a) calcium ions and (b) ACh are vital for muscle contraction.arrow_forwardWhy do you think a person is able to perform anaerobic exercise (such as lifting and holding a heavy weight) only briefly but can sustain aerobic exercise (such as walking or swimming) for long periods? (Hint: Muscles have limited energy stores.)arrow_forwardWhat is the function of the sarcoplasmic reticulum in muscle cell contraction?arrow_forward
- How does a muscle fiber incur an oxygen debt?arrow_forwardAfter death, a person no longer makes ATP, so calcium stored in the sarcoplasmic reticulum diffuses down its concentration gradient into the muscle cytoplasm. This result is rigor mortis----an unbreakable state of muscle contraction that stiffens the body for a few days until muscles begin to decay. Explain why this contraction occurs.arrow_forwardIn the diagram below, label the fine structure of a muscle, down to one of its myofibrils. Identify the basic unit of contraction in a myofibril.arrow_forward
- Figure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.arrow_forwardYou are training athletes for the 100-meter dash. They need muscles specialized for speed and strength, not endurance. What muscle characteristics would your training regimen aim to develop? How would you alter it to train a long-distance swimmer?arrow_forward
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