Multiple choice

Which of the following is the microtubule organising centre in yeast cells, functionally equivalent to the centrosome of the animal cell?

  1. Myofibril

  2. Spindle pole body

  3. Intermediate filament

  4. Microtubule

  5. Microfilament

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The spindle pole body (SPB) is the microtubule organising centre in yeast cells, functionally equivalent to the centrosome. Unlike the centrosome the SPB does not contain centrioles. The SPB organises the microtubule cytoskeleton, which plays many roles in the cell. It is important for organising the spindle and thus in cell division.