Question

During cell division, in the last stages of cytokinesis an ion is required which is
(1) Na⁺
(2) Mg²⁺
(3) Ca²⁺
(4) K⁺

Answer 1

The ion which is required during the last stage of cytokinesis is Calcium ion (ca2) .

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Answer 2

Answer:

Calcium ion($Ca^{2+}$)

Explanation:

Calcium- containing results were microinjected into dividing PtK1 cells to assess the effect of calcium ion attention on the morphology and physiology of the mitotic spindle. results containing 50 microM or further CaCl2 are incontinently and irreversibly poisonous to PtK1 cells. Those containing 5- 10 microM CaCl2 cause reversible reduction in spindle birefringence followed by normal anaphase and cytokinesis. Microinjection of 5 microM or lower CaCl2 into anaphase PtK1 cells has no sensible effect on the rate or extent of chromosome movement. Metaphase cells tend to enter anaphase 4- 5 min after injection with 1- 10 microM CaCl2, compared with an normal of 16 min after injection with calcium-free buffer.

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