Answer:
I would probably say (a) kinetochore microtubules
Even a large tapeworm cannot be seen with the naked eye and is therefore still within the realm of microbiology
When atoms in a covalent bond share electrons unequally (one atoms pulls more than the other), the bond is said to be a polar bond is formed when electrons are unequally shared between two atoms. Polar covalent bonding occurs because one atom has a stronger affinity for electrons than the other (yet not enough to pull the electrons away completely and form an ion).
