Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 4, Problem 3RQ
Summary Introduction
To review:
The eukaryotic cytoskeleton proteins along with their sizes and functions.
Introduction:
The cytoskeleton is comprised of filaments of different types of proteins that perform different functions in the cell. They are microscopic structures that can only be seen under a microscope on staining.
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Name and describe the structure and function of cytoskeletal elements.
List the three types of filaments associated with the cytoskeleton. Identify the structures in cells that are composed of microtubules.
List the three types of fibers in the cytoskeleton.
Chapter 4 Solutions
Biology: Life on Earth
Ch. 4 - The plasma membrane is composed of two major types...Ch. 4 - Fill-in-the-Blank The_______ is composed of a...Ch. 4 - Prob. 3FTBCh. 4 - 4. Antibody proteins are synthesized on ribosomes...Ch. 4 - After each description, fill in the appropriate...Ch. 4 - Two organelles that are believed to have evolved...Ch. 4 - 7. What structure in bacterial cells is composed...Ch. 4 - 1. What are the three principles of the cell...Ch. 4 - 2. Which cytoplasmic structures are common to both...Ch. 4 - Prob. 3RQ
Ch. 4 - Describe the nucleus and the function of each of...Ch. 4 - What are the functions of mitochondria and...Ch. 4 - What is the function of ribosomes? Where in the...Ch. 4 - Describe the structure and function of the...Ch. 4 - 8. How are lysosomes formed? What is their...Ch. 4 - 9. Diagram the structure of eukaryotic cilia and...Ch. 4 - List the structures of bacterial cells that have...Ch. 4 - Prob. 1ACCh. 4 - Prob. 2ACCh. 4 - What problems would an enormous round cell...
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- In what ways do the functions of the cytoskeleton differ from those of the endomembrane system?arrow_forwardDescribe the general functions of the following in a eukaryotic cell: the plasma membrane, cytoplasm, DNA, ribosomes, organelles, and cytoskeleton.arrow_forwardDescribe the structure and function of the three components of the cytoskeletonarrow_forward
- Contrast the structure and functions of the cytoskeleton with thestructure and functions of the membranous components of the cell.arrow_forwardgive specific eukaryotic cell's cytoskeletal structure and their respective functionarrow_forwardList and describe the three main types of cytoskeleton. If you wanted to do immunocytochemistry to specifically stain each type of cytoskeleton, what is a protein that could be used for each cytoskeletal type (in other words, what is a unique protein for each cytoskeletal type)? What are three types of actin structures? Describe the involvement of actin structures in cell migration. How is the growth and shrinking of microtubules regulated? Then describe the roles of microtubules in: chromosomal separation during mitosis and the movement of organelles and vesicles within a cell. Describe a possible mechanism on how signaling pathways might impact the cytoskeleton, so that cell migration could be regulated in a localized manner within a multicellular organism. (hint: think about the possible transcriptional regulation of the G-protein regulators) What are 2 main challenges of protein targeting? Then describe one way these challenges are overcome during signal-based targeting and one way…arrow_forward
- Make a list of the major eukaryotic organelles and their functions.arrow_forwardIdentify the cytoskeletal element that interacts withadherens junctions, desmosomes, and hemidesmosomes.arrow_forwardState the function of each of the following cell parts: Ribosome: Smooth endoplasmic reticulum: Rough endoplasmic reticulum: Lysosome: Peroxisome: Mitochondrion: Nucleolus: Microvilli: Cilia: Inclusions: Centrosome:arrow_forward
- Indicate which type of cytoskeletal fiber is represented in the following schematic drawings of an animal cell. Microtubules O Intermediate filaments Microfilaments Cellulose fibers None of the abovearrow_forwardState how the following organelles differ from each otherin terms of structure and function: Golgi apparatus, lysosomes,peroxisomes, glyoxysomes. How do they resemble each other?arrow_forwardAnswer the Guide Question: a) Each cell in an organism has all of the basic parts. Each has a function that benefits the other cells, how might the presence of different cell structures in plant and animal help them perform their functions as an organism. Explain. b) Why is the cell membrane considered as the guard of the cell? c) Why is the lysosome considered as the suicide bag of the cell?arrow_forward
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