Biology 2e
Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 4, Problem 23RQ

The key components of desmosomes are cadherins and.

  1. actin
  2. microfilaments
  3. intermediate filaments
  4. microtubules

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Integrins 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 filaments
Actin filaments and microtubules are similar with respect to each of the following EXCEPT: inherent polarity with plus and minus ends growth requires an organizing center association with motor proteins both are polymers of subunits regular remodeling
Which of the following are characteristics of both actin filaments and microtubules? Select all that apply They have structural polarity Their filaments undergo treadmilling Capping proteins affect length and stability of the filament The monomers bind ATP and spontaneously form polymers

Chapter 4 Solutions

Biology 2e

Ch. 4 - In plant cells, the function of the lysosomes is...Ch. 4 - Which of the following is both in eukaryotic and...Ch. 4 - Tay-Sachs disease is a genetic disorder that...Ch. 4 - Which of the following is not a component of the...Ch. 4 - The process by which a cell engulfs a foreign...Ch. 4 - Which of the following is most likely to have the...Ch. 4 - Which of the following sequences correctly lists...Ch. 4 - Congenital disorders of glycosylation are a...Ch. 4 - Which of the following have the ability to...Ch. 4 - Which of the following do not play a role in...Ch. 4 - In humans, are used to move a cell within its...Ch. 4 - Which of the following are only in plant cells?...Ch. 4 - The key components of desmosomes are cadherins...Ch. 4 - Diseased animal cells may produce molecules that...Ch. 4 - In your everyday life, you have probably noticed...Ch. 4 - In what situation(s) would the use of a scanning...Ch. 4 - In what situation(s) would a transmission electron...Ch. 4 - What are the advantages and disadvantages of each...Ch. 4 - Explain how the formation of an adult human...Ch. 4 - Antibiotics are medicines that are used to fight...Ch. 4 - Explain why not all microbes are harmful.Ch. 4 - You already know that ribosomes are abundant in...Ch. 4 - What are the structural and functional...Ch. 4 - Why are plasma membranes arranged as a bilayer...Ch. 4 - In the context of cell biology, what do we mean by...Ch. 4 - In your opinion, is the nuclear membrane part of...Ch. 4 - What are the similarities and differences between...Ch. 4 - How do cilia and flagella differ?Ch. 4 - Describe how microfilaments and microtubules are...Ch. 4 - Compare and contrast the boundaries that plant,...Ch. 4 - How does the structure of a plasmodesma differ...Ch. 4 - Explain how the extracellular matrix functions.Ch. 4 - Pathogenic E. coil have recently been shown to...
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