Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 4, Problem 2FIB
Summary Introduction
Introduction:
Eukaryotic cells contain cytoskeleton; this structure is unique to the eukaryotic cell. The cytoskeleton is a three-dimensional structure and it is a network of tubules and filaments that fills the cytoplasm.
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There are types of cytoskeleton fiber- intermediate filaments. Tell their structure and/or function.
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Intermediate filaments (IFs) function to provide mechanical strength to the cell and for internal organization of the cells. The intermediate filament _______________ plays a key role in connecting epithelial cells to the extracellular matrix. The IF binding protein________ plays key role in connecting the IFs in the nucleus with the cytoskeleton in the cytoplasm to help position the nucleus.
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Chapter 4 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 4.1 - trace the historical development of the cell...Ch. 4.1 - list the three principles of the cell theory?Ch. 4.2 - describe the structure and features shared by all...Ch. 4.2 - distinguish prokaryotic from eukaryotic cells?Ch. 4.2 - Prob. 1TCCh. 4.2 - Prob. 1CSCCh. 4.3 - describe the structure and function of the major...Ch. 4.3 - describe the internal features of bacteria,...Ch. 4.4 - Prob. 1CYLCh. 4.4 - list the structures found in animal but not plant...
Ch. 4.4 - describe the structure and function of each major...Ch. 4.4 - What problems would arise if the trachea were...Ch. 4.4 - Why do the chromosomes in chromatin condense in...Ch. 4.4 - Using Fig. E4 4. plot the changes in each country...Ch. 4.4 - Why is it advantageous for all cellular membranes...Ch. 4.4 - Why is it important for lysosomal enzymes to be...Ch. 4.4 - CONSIDER THIS What advantages do bioengineered...Ch. 4.4 - Over the years, scientists have wondered how many...Ch. 4 - Which of the following is/are found only in...Ch. 4 - Which of the following is not a function of the...Ch. 4 - Prob. 3MCCh. 4 - Prob. 4MCCh. 4 - Prob. 5MCCh. 4 - Prob. 1FIBCh. 4 - Prob. 2FIBCh. 4 - Prob. 3FIBCh. 4 - Prob. 4FIBCh. 4 - Prob. 5FIBCh. 4 - Two organelles that are believed to have evolved...Ch. 4 - Prob. 7FIBCh. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Describe the nucleus and the function of each of...Ch. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Describe the structure and function of the...Ch. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 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 the cell there are three types of filaments that form the cell skeleton. Answer:a)Which they are.b)How they are constructed.c)What their function is.arrow_forwardWOve process is stored in form of ATP. .A student observing muscle cells under light power microscope noticed that they contained a lot of mitochondria. Account for the presence of these organelles in striated muscle cells. A pupil set up the followingarrow_forwardThere are three major classes of filaments that make up the cytoskeleton. What are they, and what are the differences in their functions? Which cytoskeletal filaments would be most plentiful in a muscle cell or in an epidermal cell making up the outer layer of the skin? explain your answers.arrow_forward
- Match each term to the phrase that describes it best. Cell fiber that can be found in muscle cells a. Primary cilium e. vLargest of the cell fibers; act like "engines" for the cell b. Microfilaments C. Gap junctions d. Centrosomes e. Microtubules f. Cilia g. Intermediate filaments h. Microvilli i. Flagella j. Desmosomes k. Centrioles 1. Tight junctionsarrow_forwardSecretory vesicles fuse with the cell membrane to release their contents to the outside of the cell. In this process, the membrane of the secretory vesicle becomes part of the cell membrane. Because small pieces of membrane are continually added to the cell membrane, we would expect the cell membrane to become larger and larger as secretion continues. However, the cell membrane stays the same size. Explain how this happens.arrow_forwardWhat sort of cellular changes would you expect a sailor sick with scurvy to experience? O Their collagen (an extracellular matrix component) would be diminished, resulting in fewer binding sites for integrins. The end result would be less adherent cells. O Their collagen (a cytoskeletal fiber) would be diminished, resulting in a loss of contractile motion within the cell, affecting both cell migration and muscle function.arrow_forward
- Define Membrane Extensionarrow_forwardSecretory vesicles fuse with the cell membrane to release their contents to the outside of the cell. In this process, the membrane of the secretory vesicle becomes part of the cell membrane because small pieces of the membrane are continually added to the cell membrane, one would expect the cell membrane to become larger and larger as secretion continues. The cell membrane stays the same size, however. Explain how this happens.arrow_forwardMuscular dystrophy is caused by a mutation in dystrophy, and intracellular protein that binds to the cytoskeleton. Dystropin also binds to _____, which is found in plasma membrane of the cell and binds the extracellular matrix. Actin filament Gap junction Integrin Cadherin Tight junctionarrow_forward
- Describe how the two main types of cell extensions, cilia and microvilli, differ in structure and function.arrow_forward_________________________ is responsible for bringing ATP-actin to the _________ of microfilaments. In contrast, ____________________ is responsible for destabilizing the ________________ end of microfilaments. thymosin; pointed; cofilin; pointed profilin; barbed; cofilin; pointed cofilin; barbed; profilin; pointed formin; barbed; G actin; pointedarrow_forwardDescribe the three types of protein filaments that make up thecytoskeleton.arrow_forward
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