Answer:
A
Explanation:
i think that's the answer but I'm not sure
That's false, it's the pons :)
None of the above? I’m guessing, secondary, primary and tertiary doesn’t sound right !
Answer:
Microtubules, like actin filaments, are dynamic structures: they can grow and shrink quickly by the addition or removal of tubulin proteins. Also similar to actin filaments, microtubules have directionality, meaning that they have two ends that are structurally different from one another. I hope this helps :)