Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 13.1CC
Cytoskeletal
Expert Solution & Answer
Summary Introduction
To explain: The advantages of using repeating structural elements to construct the cytoskeleton.
Introduction: Modularity in the cytoskeleton is the common feature observed in prokaryotes and eukaryotes. Repeating structural elements are used to construct the cytoskeleton. The repeating structures help in giving the body its overall shape and structure.
Explanation of Solution
The repeating structures present in the cytoskeleton can be visualized with the help of sophisticated microscopy techniques. Cytoskeleton assembly is reversible and modular in nature. Production and transmission of mechanical signals through sensory perception is the primary advantage of using repeating structural elements to construct the cytoskeleton.
These repeating structural elements can be used as epigenetic determinants by modifying cell movement and cell shape ultimately leading to the determination of cell fate and function.
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Consider two different proteins that are leaving from the Golgi in order to arrive in their common destination, a lysosome. In order for these two different proteins to be sent to the same place, what should they have in common?
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Chapter 13 Solutions
Becker's World of the Cell (9th Edition)
Ch. 13 - Cytoskeletal polymers are modular, and their...Ch. 13 - How could you use paclitaxel, which makes MTs less...Ch. 13 - The amount of dynamic instability exhibited by...Ch. 13 - Prob. 13.3CCCh. 13 - In which of the following cells would you expect...Ch. 13 - Filaments and Tubules. Indicate whether each of...Ch. 13 - True or False. Identify each of the following...Ch. 13 - Prob. 13.3PSCh. 13 - Stabilization and the Critical Concentration....Ch. 13 - Prob. 13.5PS
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- Which of the following best describes the pH of the lysosomal interior? a.) The interior of a lysosome generally has a pH similar to cytoplasm b.) The interior of a lysosome generally has a pH higher than cytoplasm c.) The interior of a lysosome generally has a pH lower than cytoplasmarrow_forwardGive the respective structural descriptions and functions of the following: 1. Cell Membrane 2. Nucleus 3. Nucleolus 4. Smooth Endoplasmic Reticulum 5. Rough Endoplasmic Reticulum 6. Nuclear Membrane 7. Mitochondria 8. Golgi Apparatus 9. Cytoskeletonarrow_forwardWhich of the following is a function performed by the cytoskeleton?a) provides structural support that determines cell shape and resists deforming forcesb) positions various organelles within the cell interiorc) provides a network of tracks over which materials like mRNA and organelles move within cellsd) serves as a force-generating apparatus that moves cells from one place to anothere) all of these choicesarrow_forward
- Which of the following is a feature common to all three components of the cytoskeleton?arrow_forwardWhat is the structural reason why ribosomes are technical not considered as organelles?arrow_forward12) Match the cell-cell junction on the left with the appropriate function on the right. Note that more than one letter may apply for a particular function and that each letter may be used more than once or not at all. A) Gap junctions provides a very strong attachment point between cells B) Desmosomes allow easy movement of large amounts of substances between adjacent cells C) Plasmodesmata seals the plasma membranes of adjacent cells together, preventing the movement of molecules between them D) Tight junctionsarrow_forward
- Which of the following proteins would NOT be made on ribosomes that are bound to the rough endoplasmic reticulum? a) a digestive protein that is found inside a lysosome b) an ion channel protein that is inserted into the cell membrane. c) insulin protein, which is secreted from the cell. d) a protein that becomes part of the cytoskeletonarrow_forwardName three uniquely eukaryotic organelles or structural elements that primarily provide structural support. How are the things you named related (besides providing support), if at all?arrow_forwardWhich is true of ribosomes found in eukaryotic cells? They: A) contain DNA B) synthesize carbohydrates C) are attached to the Rough Endoplasmic reticulum (RER) and carry out the synthesis of proteins D) are found inside the endoplasmic reticulum E) are originally found associated with the endoplasmic reticulum in prokaryotic cells.arrow_forward
- Match the following structures with their definitions: (1) Golgi apparatus (2) mitochondria (3) peroxisomes (4) cilia (5) endoplasmic reticulum (6) cytoskeleton (7) vesicles (8) ribosomes A. sacs that contain enzymes thatcatalyze a variety of specific biochemical reactionsB. structures on which protein synthesis occursC. structures that house the reactions that release energy from nutrientsD. a network of microfilaments and microtubules that supports and shapes a cellE. a structure that adds sugars to certain proteins and processes them for secretionF. membrane-bounded sacsG. a network of membranous channels and sacs where lipids and proteinsare synthesizedH. hairlike structures that extend from certain cell surfaces and wave about.arrow_forwardWhat would happen to the cytoskeleton if you replaced all of the normal GTP in cells with a chemical variant of GTP that behaves in every way like normal GTP except that it cannot be hydrolyzed to GDP? It would prevent BOTH polymerization and depolymerization of microtubules. It would prevent microtubule polymerization. It would NOT affect EITHER polymerization or depolymerization of microtubules. It would prevent microtubule depolymerization.arrow_forwardWhich of the following proteins is made by ribosomes that are free in the cytoplasm (NOT on bound ribosomes)? A) proteins that are inserted into the plasma membrane B) proteins that function inside mitochondria C) proteins that remain in the cytoplasm as part of the cytoskeleton D) proteins that function inside a lysosome E) proteins that are secreted from the cellarrow_forward
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