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Questions and Answers
What is the primary factor responsible for the dynamic instability of microtubules?
What is the primary factor responsible for the dynamic instability of microtubules?
- Presence of specific proteins (correct)
- Genetic mutations
- Temperature fluctuations
- Acidic environment
In the context of microtubules, what is the role of GTP hydrolysis in the growth and shrinkage process?
In the context of microtubules, what is the role of GTP hydrolysis in the growth and shrinkage process?
- Initiates shrinkage and ceases growth (correct)
- Has no impact on microtubule dynamics
- Causes rapid alternating growth and shrinkage
- Promotes growth and inhibits shrinkage
Which of the following best describes the behavior of a microtubule in the shrinking phase?
Which of the following best describes the behavior of a microtubule in the shrinking phase?
- Maintaining a constant length through polymerization
- Undergoing structural changes to increase rigidity
- Diminishing in length due to tubulin disassembly (correct)
- Experiencing erratic growth with frequent pauses
What is the mechanism by which a microtubule transitions from shrinking to growing phase?
What is the mechanism by which a microtubule transitions from shrinking to growing phase?
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Which process is essential for the dynamic instability of microtubules to occur?
Which process is essential for the dynamic instability of microtubules to occur?
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