Question

Spindle fibres are made of

• A. Actin protein and RNA
• B. Cellulose and RNA
• C. Tubulin protein and RNA
• D. Both A and C

Answer 1

The correct option is C Tubulin protein and RNA

Spindle fibers are the cellular structures which are mainly used during cell division. It forms a protein structure which helps in cell division. They are also known as mitotic spindle. It is made up of 97% tubulin protein and 3% RNA. Alpha and beta tubulin forms the polymeric tubulin. The spindle fibres attach to kinetochore of the chromosomes and divide the cell.

So, the correct answer is option C.