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 :)
The cell is deffusion.
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Answer:
Autotroph
Explanation:
The definition of an autotroph is an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.