Answer:
SPRAWDZIAN Z BIOLOGII UKŁAD RUCHU BŁAGAM POMÓŻCIE
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.
Peripheral tissues receive oxygenated blood via the circulatory system. Delivering oxygen to cells, oxygen diffuses through tissues along a gradient of high to low amounts. Thus, option B is correct.
<h3>What is the movement of oxygen in cell?</h3>
Hemoglobin and oxygen interact chemically inside the red blood cell, where it is carried both by free diffusion and hemoglobin-facilitated diffusion. In blood plasma, oxygen is transferred by free diffusion and convection through cell membranes.
Therefore, The concentration of oxygen will be lower inside the cell compared to outside the cell.
Learn more about oxygen here:
brainly.com/question/14531171
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Answer:
sensory and integration
Explanation:
those are the two main functions.
3 cause it’s gives time-varying features
