Cytoskieleton Homework

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Cytoskieleton Homework

Question

Cytoskieleton Homework

 

Instructions              

Answer the following questions based on the Cytoskeleton lecture and on Zoom Disc. Refer to the textbook chapter to help you.

 

  1. What is the structure and function of microtubules?

 

  1. What types of bonds might be responsible for holding the tubulin dimers together in the filament?

 

  1. Why must the interactions between microtubule protofilaments be non-covalent?

 

  1. How might the property of dynamic instability influence the cell?

 

  1. What happens to the tubulin dimers following depolymerization?

 

  1. What is the role of energy in this microtubule process?

 

  1. Why would the conversion from GTP-tubulin to GDP-tubulin result in a change in the organization of protofilaments?

 

  1. Why is Dynamic Stability important for microtubules in a cell?

 

  1. Why do centrioles reproduce during S phase? And where would the – and + ends be located?

 

  1. What is the structure and function of intermediate filaments?

 

  1. What is the function of actin?

 

  1. Why is treadmilling important for actin filaments in a cell?

 

  1. What is the difference between dynamic instability and treadmilling? How does this relate to structure/function relationships?

 

  1. Why is energy needed for microtubules and actin filaments but not for intermediate filaments?

 

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This question is taken from Biol 303 – Intermediate Cell Biology » Fall 2021 » Homework