Answer:
Critical concentration is: a. the concentration of tubulin dimers at which assembly is balanced with disassembly.
Explanation:
The cytoskeleton is a complex network of interconnected filaments and tubules that extends throughout the cytosol, from the nucleus to the inner surface of the plasma membrane. Tubulin may assemble and disassemble simultaneously in a process known as treadmilling. In this process, critical concentracion <em>is the concentration of G-actin (actin) or the alpha,beta- tubulin complex (microtubules) at which assembly is balanced with disassembly.</em>
The best and most correct answer among the choices provided by your question is The best and most correct answer among the choices provided by your question is the last choice.
<span>
Kingdom Protista is not valid under evolutionary classification because they evolved before any other kingdom, and as such share a most recent common ancestor with each other, as opposed to any other group.</span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
(B.) Response to stimulus, to make it less complex, the way it responds to certain conditions.
Hope it helped,
Happy homework/ study/ exam!