Answer: 1.39
Explanation: 1.36 +3 = 1.39
7,200 feathers
Explanation
<span>Microtubules are the protein filaments which are bundled together to form cilia and flagella.
</span><span> Microtubules are microscopic hollow tubes made of the proteins alpha and beta tubulin</span>.<span>They are the third principal component of the cytoskeleton.</span>