Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 45, Problem 1CQ
Compare the structural and functional features of exoskeletons and endoskeletons and their advantages and disadvantages.
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Chapter 45 Solutions
Biology
Ch. 45.1 - Prob. 1CCCh. 45.2 - Prob. 1CCCh. 45.2 - Prob. 1CSCh. 45.2 - Prob. 2CSCh. 45.3 - What is the normal function of the PPAR- protein...Ch. 45.3 - CoreSKILL What was the hypothesis proposed by...Ch. 45.3 - CoreSKILL Assume that the mean weight of both...Ch. 45 - Prob. 1TYCh. 45 - Prob. 2TYCh. 45 - Prob. 3TY
Ch. 45 - Prob. 4TYCh. 45 - The function of ATP during muscle contraction is...Ch. 45 - The function of Ca2+ in skeletal muscle...Ch. 45 - Stimulation of a muscle fiber by a motor neuron...Ch. 45 - Muscle fibers that have a large number of...Ch. 45 - Which of the following statements about movement...Ch. 45 - Prob. 10TYCh. 45 - Compare the structural and functional features of...Ch. 45 - Describe as many types of animal locomotion as you...Ch. 45 - Prob. 3CQCh. 45 - List and briefly describe the steps in the...Ch. 45 - Discuss the three types of muscle tissues found in...
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- Compare the structure and functions of different types of skeletal systems, including the hydrostatic skeleton, exoskeleton, and endoskeleton.arrow_forwardWhich of the following is not a true statement comparing exoskeletons and endoskeletons? Endoskeletons can support larger organisms Only endoskeletons can grow as an organism grows Exoskeletons provide greater protection of the internal organs Exoskeletons provide less mechanical leverage.arrow_forwardExplain radial loop–scaffold modelarrow_forward
- What are the steps of the sliding filament model? Select all that apply. Sarcomeres are in a relaxed state, in which myosin-binding sites on actin are blocked. When a nervous signal excites the muscle, myosin-binding sites on actin open up and myosin binds to actin. The myosin heads hydrolyze ATP to ADP and P. The binding of myosin to actin releases phosphate and triggers a power stroke. ATP binds to myosin, and the myosin releases its grip on actin, returning to a relaxed state.arrow_forwardCompare the characteristics of skeletal and smoothmuscle cell contractions.arrow_forwardUnlike exoskeletons, endoskeletons do not provide protection for the body surface of animals. How can the lack of an external skeletonalso be an advantage for animals?arrow_forward
- A sarcomere contracts when a) Thin filaments (actin) slide b) Thick filaments (myosin) slide c) Thin filaments (actin) contract d) Thick filaments (myosin ) contractarrow_forwardIndicate which of the following are true. Chronically shortened muscles will lose sarcomeres in series in order to maintain ideal amounts of myofilament overlap. Contractile force is proportional to the length of a muscle. Muscle organ contraction is all or nothing. Muscle cells are surrounded by an endomysium. Actin is the thick filament and Z-lines are where the cross-bridges zig-zag to adjacent actin filaments. Muscles with fewer motor units are weaker, i.e., capable of less force. A nerve impulse, calcium, and ATP are necessary for muscle contraction. Tendons attach bones to bones and help to limit the range of motion at joints. Muscle tissue is very dynamic and will respond to chronic stress by becoming stronger (making more myofilaments), chronic contraction by becoming shorter (losing sarcomeres in series), and stretching by becoming longer (adding sarcomeres in series). Myofilaments are actually long strands of proteins.arrow_forwardMuscle versus bone Venn diagram Drag each word or phrase to the part of the Venn diagram to which it is associated; if a word or phrase is associated with both muscular and skeletal systems, place it in the overlapping parts of the circles. High use of ATP Bone cells Helps maintain body temperature Contains blood vessels Includes connective tissue Calcium reservoir Produces blood cells Receives signals from nervous system One function is movement Sliding filament model Myofibrils Vertebrate muscular system Vertebrate skeletal systemarrow_forward
- Limiting Weights is the exercise that stimulates muscles to become stronger. As muscles gain in…. Which of the following processes occurs at the cellular level? Mitochondria is added to aid in ATP production. More calcium is released with each action potential. Larger diameter myochorils are added to each cell.arrow_forwardA scientist extracts and measures the calcium content of one of your muscle fibers while you are asleep, when all of your muscles are relaxed. Where is the scientist likely to find calcium? In the T-tubules In the sarcoplasmic reticulum Bound to tropomyosin Bound to troponinarrow_forwardDescribe the relationship between non -muscle myosin ,actin and growth cone extension.arrow_forward
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