Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 4, Problem 4TY
Summary Introduction
Introduction:
Muscles are the connective tissues that are widely spread throughout the body and help to provide movement and flexibility to the body. The muscles are divided into cardiac, skeletal and visceral muscles.
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Actin and microtubules have polarity, intermediate filaments have no polarity. What is the main consequence of this difference?
What is not a similarity between motility of cilia/flagella and skeletal muscle?
Group of answer choices:
Both have cytoskeletal fibers arranged in a ring pattern
Both involve motor proteins connected to a cytoskeleton "track"
Both can produce movement
Both require ATP hydrolysis
Briefly describe how the components of the cytoskeleton filaments get to the right location in the cell for filament formation.
Chapter 4 Solutions
Principles of Biology
Ch. 4.1 - With regard to the origin of life, why are...Ch. 4.1 - Prob. 2CCCh. 4.1 - Prob. 3CCCh. 4.1 - Prob. 1BCCh. 4.1 - Prob. 4CCCh. 4.1 - Prob. 1TYKCh. 4.1 - Prob. 2TYKCh. 4.1 - Prob. 3TYKCh. 4.2 - Prob. 1CCCh. 4.2 - Prob. 1TYK
Ch. 4.2 - Prob. 2CCCh. 4.2 - Prob. 2TYKCh. 4.3 - Prob. 1BCCh. 4.3 - Prob. 1CCCh. 4.3 - Prob. 2BCCh. 4.3 - Prob. 1TYKCh. 4.3 - Prob. 2TYKCh. 4.3 - Prob. 3TYKCh. 4.4 - Prob. 1BCCh. 4.4 - Prob. 1CCCh. 4.4 - Prob. 1TYKCh. 4.4 - Prob. 2BCCh. 4.4 - Prob. 2TYKCh. 4.4 - Prob. 3TYKCh. 4.5 - What is the function of the nuclear lamina and the...Ch. 4.5 - Prob. 1BCCh. 4.5 - Prob. 2CCCh. 4.5 - Prob. 1TYKCh. 4.5 - Prob. 2TYKCh. 4.5 - Prob. 3TYKCh. 4.6 - What is the advantage of having a highly...Ch. 4.6 - Prob. 1BCCh. 4.6 - Prob. 2CCCh. 4.6 - Prob. 1TYKCh. 4.6 - Prob. 2TYKCh. 4.7 - Prob. 1TYKCh. 4.8 - Prob. 1CCCh. 4.8 - Prob. 2CCCh. 4.8 - Prob. 3CCCh. 4.8 - Prob. 4CCCh. 4.8 - Prob. 1TYKCh. 4.8 - Prob. 2TYKCh. 4.8 - Prob. 3TYKCh. 4.9 - Which of the following could be found in a...Ch. 4.9 - Prob. 2TYKCh. 4 - The cell theory states that all living things are...Ch. 4 - Prob. 2TYCh. 4 - Prob. 3TYCh. 4 - Prob. 4TYCh. 4 - Prob. 5TYCh. 4 - Prob. 6TYCh. 4 - Prob. 7TYCh. 4 - Prob. 8TYCh. 4 - Prob. 9TYCh. 4 - Prob. 10TYCh. 4 - Describe two specific ways that protein-protein...Ch. 4 - Explain how motor proteins and cytoskeletal...Ch. 4 - A principle of biology is that structure...Ch. 4 - Prob. 1CBQCh. 4 - Prob. 2CBQ
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- Which of the following is NOT a component of the cytoskeleton? Microtubules intermediate filaments Microfilaments Primary filamentsarrow_forwardWhich of the following molecular motors is known to travel in an anterograde direction along microtubules? myosins kinesins myosins and dyneins dyneinsarrow_forwardA melanosome (type of vesicle containing the pigment melanin) is transported towards the nucleus of the cell. The hydrolysis of ATP is involved with this movement. Identify the most likely motor protein and cytoskeletal filament involved with this transport. a. Myosin, microtubules b. Kinesin, actin filaments c. Dynein, actin filaments d. Dynein, microtubules e. Kinesin, microtubules f. Myosin, actin filamentsarrow_forward
- Which of the following describes an F-actin microfilament? A flexible, helical filament composed of two strands assembled from G-actin 13 protofilaments composed of heterodimers with a hollow core a flexible filament composed of 13 interwoven protofilaments Eight tetramers twisted into a rope-like filamentarrow_forwardIntegrins are important in cell crawling because they anchor the leading edge of the cell to the surface it is moving over they are receptors for diffusible chemical ligands that determine the direction the cell will move in they cross-link actin filaments to microtubules and intermediate filaments of the cytoskeleton they serve as nucleating sites for polymerization of new actin filamentsarrow_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
- Which 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_forwardIntermediate 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. keratin, SUN-domain protein SUN-domain proteins, lamin lamin, keratin SUN-domain proteins, keratin lamin, SUN-domain protein keratin, laminarrow_forwardWhich of the following statements are true for both actin and tubulin: a. Both actin and tubulin filaments are hollow. b. Both actin and tubulin are structural proteins capable to form filaments that can grow from both (+) and (-) ends. c. Both actin and tubulin require GTP for polymerization into filaments. d. Both actin and tubulin require ATP for polymerization into filaments.arrow_forward
- There are 4 types of movement based on microtubules and microfilaments. List them, as well as two consequences if each of these movement systems failed. Which of these would you say would do the least damage, and why?arrow_forwardMatch the motor protein with its biochemistry (head and tail attachments) and outcome of motor activity (cellular role). +end cytoplasmic kinesins cytoplasmic dynein myosin I axonemal dynein A. head moves on the interphase array of microtubules, tail attached to vesicles, which move toward centrosome/center of cell B. head moves on the interphase array of microtubules, tail attached to vesicles which move toward plasma membrane/away from center of cell C. head moves along cortical actin, tail attached to vesicles which move toward plasma membrane D. head moves along doublet microtubules of cilia/flagella, tail attached to neighboring doublet microtubules of cilia/flagella, the cilia/flagella…arrow_forwardDescribe two similarities and two differences between actin filaments and microtubules.arrow_forward
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