Which of the following is a plausible explanation for the fact that the chemical EGTA blocks microtubule disassembly? A)EGTA binds to Ca²⁺ ions, which are known to induce microtubule depolymerization. B)EGTA binds to Mg²⁺ ions, which are known to induce microtubule depolymerization. C)EGTA binds to Ca²⁺ ions, which are known to induce microtubule polymerization. D)EGTA destroys Ca²⁺ ions, which are known to inhibit microtubule polymerization. E)EGTA destroys Mg²⁺ ions, which are known to inhibit microtubule polymerization.

Question

Quizplus · Accepted Answer

EGTA is a calcium chelator, meaning it binds to calcium ions. Since the option suggests EGTA binds to calcium ions, which are implicated in microtubule depolymerization, it provides a plausible mechanism by which EGTA could block microtubule disassembly, by sequestering calcium ions necessary for this process.

Which of the Following Is a Plausible Explanation for the Fact