Podcast
Questions and Answers
What is the main function of cytoplasmic dynein in a cell?
What is the main function of cytoplasmic dynein in a cell?
- Control the number of microtubules in the centrosome
- Regulate the polarity of microtubules in the cell
- Facilitate the assembly of microtubules at the MTOC
- Position the spindle and move chromosomes during mitosis (correct)
What is the subunit incorporated into a microtubule polymer?
What is the subunit incorporated into a microtubule polymer?
- ATP-actin monomers
- GTP-αβ-tubulin heterodimer (correct)
- 70 different proteins as tetramers
- ATPase
Which end of a microtubule is the preferential site of incorporation?
Which end of a microtubule is the preferential site of incorporation?
- + End (barbed)
- + End (β-tubulin) (correct)
- Polarity
- Internal
Which organelle or structure is positioned by cytoplasmic dynein?
Which organelle or structure is positioned by cytoplasmic dynein?
What type of enzymatic activity is associated with microtubules?
What type of enzymatic activity is associated with microtubules?
What is the primary role of microtubule-organizing centers (MTOCs) in a cell?
What is the primary role of microtubule-organizing centers (MTOCs) in a cell?
Which type of motor proteins are associated with microtubules?
Which type of motor proteins are associated with microtubules?
Which statement accurately describes the function of centrosomes in a cell?
Which statement accurately describes the function of centrosomes in a cell?
How do kinesins and dyneins differ in their roles within a cell?
How do kinesins and dyneins differ in their roles within a cell?
What is the structure of microtubules?
What is the structure of microtubules?
Which group of proteins is a major companion of microtubules?
Which group of proteins is a major companion of microtubules?
What is the main function of microtubules in nerve cells?
What is the main function of microtubules in nerve cells?
Which statement accurately describes the role of microtubules in intracellular motility?
Which statement accurately describes the role of microtubules in intracellular motility?
In nerve cells, why is directed movement along microtubules crucial?
In nerve cells, why is directed movement along microtubules crucial?
How do microtubules contribute to the organization of nerve cells?
How do microtubules contribute to the organization of nerve cells?
What are the consequences of defects in transport along microtubules?
What are the consequences of defects in transport along microtubules?
