What are the functions of microtubules in an eukaryotic cell?

Answer 1

See below about the functions of microtubules

Microtubules are part of the cell skeleton and they are located in the cytoplasm. As on the picture below, they are built mostly of tubulin #-># a heterodimeric protein with two polypeptide chains of alpha and beta tubulins.

Their function is to transfer substances in the cell, to perform cellular and intracellular motion (control of cellular structure motion, cell shaping and cell polarity) and microtubules participate in the division of eukaryotic cells, especially in mitosis. In mitosis they separate chromatides.

Around the spindle apparatus, during mitosis, there are three types of microtubules: kinetochore microtubules, astral rays/ fibres and polar microtubules.

More about spindle fibres:
What is the difference between astral ray and spindle fibre?

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Answer 2

Oliver Antoine

In addition to serving as tracks for intracellular transport, microtubules also aid in the maintenance of cell shape, structural support, and mitotic spindle formation.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.