Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Textbook Question
Chapter 12.2, Problem 5CC
A kinetochore has been compared to a coupling device that connects a motor to the cargo that it moves. Explain.
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Chapter 12 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
Ch. 12.1 - How many chromosomes are drawn in each part of...Ch. 12.1 - WHAT IF? A chicken has 78 chromosomes in its...Ch. 12.2 - How many chromosomes are shown in the illustration...Ch. 12.2 - Compare cytokinesis in animal cells and plant...Ch. 12.2 - During which stages of the cell cycle does a...Ch. 12.2 - Compare the roles of tubulin and actin during...Ch. 12.2 - A kinetochore has been compared to a coupling...Ch. 12.2 - MAKE CONNECTIONS What other functions do actin...Ch. 12.3 - In Figure 12.14, why do the nuclei resulting from...Ch. 12.3 - How does MPF allow a cell to pass the G2 phase...
Ch. 12.3 - MAKE CONNECTIONS Explain how receptor tyrosine...Ch. 12 - Differentiate between these terms: chromosome,...Ch. 12 - In which of the three phases of interphase and the...Ch. 12 - Explain the significance of the G1, G2, and M...Ch. 12 - Through a microscope, you can see a cell plate...Ch. 12 - Vinblastine is a standard chemotherapeutic drug...Ch. 12 - One difference between cancer cells and normal...Ch. 12 - The decline of MPF activity at the end of mitosis...Ch. 12 - In the cells of some organisms, mitosis occurs...Ch. 12 - Which of the following does not occur during...Ch. 12 - Cell A has half as much DNA as cells B, C, and D...Ch. 12 - The drug cytochalasin B blocks the function of...Ch. 12 - VISUAL SKILLS The light micrograph shows dividing...Ch. 12 - DRAW IT Draw one eukaryotic chromosome as it would...Ch. 12 - EVOLUTION CONNECTION The result of mitosis is that...Ch. 12 - SCIENTIFIC INQUIRY Although both ends of a...Ch. 12 - WRITE ABOUT A THEME: INFORMATION The continuity of...Ch. 12 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- Which direction is exclusive to dyneins and which to kinesins? Motor proteins are required for the cell to operate normally. They are concentrating their attention on which structural protein.arrow_forwardIdentify the structures and functions of microtubule-based motor proteins, kinesins and dyneins.arrow_forwardBriefly describe how the bicoid and nanos genes help to determine the anterior–posterior axis of the fruit fly.arrow_forward
- The movement of kinesin motor proteins involves both the motor domain and the linker domain. Describe the role of each domain in kinesin movement, direction of movement, or both. Could kinesin-1 with one inactive head efficiently move a vesicle along a microtubule?arrow_forwardWhich of the following molecular motors is known to travel in an anterograde direction along microtubules? myosins kinesins myosins and dyneins dyneinsarrow_forwardWhat is the function of a gap junction? Please describe or diagram an experiment to test the function of a gap junction.arrow_forward
- A useful technique for studying microtubule motors is to attach them by their tails to a glass coverslip (which can be accomplished quite easily because the tails stick avidly to a clean glass surface) and then allow them to settle. The microtubules may then be viewed in a light microscope as they are propelled over the surface of the coverslip by the heads of the motor proteins. Because the motor proteins attach at random orientations to the coverslip, however, how can they generate coordinated movement of individual microtubules rather than engaging in a tug-of-war? In which direction will microtubules crawl on a ‘bed’ of kinesin molecules (i.e., will they move plus-end first, or minus-end first)?arrow_forwardWhat feature of procollagen synthesis provided early evidence for the Golgi cisternal maturation model?arrow_forwardWhich of the following is NỘT true of the mechanism by whldh kiesin motor proteins walk along microtubules? Kinesin molecules bind to other kinesin molecules as their cargo One foot, or head, domain of kinesin is always attachhed to the miarotubule Kinesin functions as a dimer. Kinesin dimers function autonomously (l.e. each molecule is bound to one molecule of cargo) Kinesin molecules are plus end-directed motor proteins A Moving to the next question prevents changes to this answer.arrow_forward
- Actin filaments at the leading edge of a crawling cell are believed to undergo treadmilling. What is treadmilling, and what accounts for this assembly behavior?arrow_forward1. Which myosin type II property is most different from kinesin-1? A) myosin has two heads that can bind to cytoskeletal filamentsB) myosin is recruited into thick bipolar assembliesC) myosin hydrolyzes ATPD) myosin is an allosteric motor 2. If you were examining a newly available genome and your task was to identify the encoded family of kinesin motor proteins, what domain would be the most useful starting place for your analysis? A) Light chain #1 binding sitesB) Neck regionC) Cargo domainD) Motor domainE) Light chain #2 binding sites please explainarrow_forwardDescribe the mechanism by which a motor protein moves along microtubules using ONE example. In your answer, provide details of experimental approaches that can be used to assess the activity of the motor protein.arrow_forward
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