Answer:
Colchicine
Explanation:
Colchicine is an alkaloid derived from the autumn crocus (Colchicum autumnale).
The effect of colchicine, which inhibits microtubule polymerization and thus assembly of the mitotic spindle, demonstrates the presence of another checkpoint in the cell cycle. When colchicine is added to cultured cells, the cells enter mitosis and arrest with condensed chromosomes. With increasing time, a large fraction of the cells in a culture become arrested, thus permitting determination of the size, shape, and number of mitotic chromosomes — that is, the karyotype — in multiple cells. A checkpoint control somehow senses when the mitotic spindle has not assembled properly and prevents activation of the APC polyubiquitination system that normally leads to degradation of the anaphase inhibitor, required for onset of anaphase, and later to the degradation of mitotic cyclins, required for the exit from mitosis. As a result, MPF activity remains high, chromosomes remain condensed, and the nuclear envelope does not re-form.
That would be true! (please rate)
Answer:
Option b) Hydrophobic interactions between phe106 and ile108 of one monomer and ile272 and leu273 of the other monomer. Ionic bonds between arg96 and arg103 of one monomer and glu300 and glu304 of the other monomer.
Explanation:
In the structure, there are ionic hydrogen bonds and salt bridges between the 42, R221, and D24. These interactions have a dynamic impact on the activity and structural stability of the protein nature.
The hydrophobic interactions at the interfaces also contribute in the stabilization of the protein structure.
Answer:
the more corn grown the less nitrogen there will be in the soil thus the more corn grown the worse the yield will be
Explanation:
the farmer needs to alternate between fields to allow the soil to return to normal
Answer:
homeostasis
Explanation:
The homeostasis definition refers to the mechanism used by the body to maintain the body/cell dynamic equilibrium.
"Body/cell dynamic equilibrium" means that the body/cell is not in a complete equilibrium with the enviroment. Instead of this, the body/cell maintain the same enviroment (including electrolites and water levels, blood pressure, temperature, etc) even with the chages on the enviroment.
