<span>X-ray crystallography, was the tool
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Convection in the asthenosphere is the main reason for the movement of tectonic plates.
Answer: FALSE
Explanation:
The plasma membrane has both Na –K channels across it walls. They are membrane transport proteins which hydrolyse ATP s for the active transport mechanisms for transport of sodium and potassium ions across the plasma membranes .
Naturally,there are more potassium ion channels than sodium channels in plasma membrane; potassium is also extracellular while sodium is extracellular
Therefore ,when some potassium ions diffused into the Axoplasm, from the extracellular medium;;some potassium ions still move out BACK into the extracellular environments. Not all potassium are restricted from leaving .
This leakage occurs because of more available potassium ions channels than sodium ions, and higher number of available potassium ions
Thus the answer is FALSE
the ratio of diffusion <u>is 3 sodium out to 2 potassium in </u>
Answer:
In cancerous cell, telomerase expresses and enhances the cell cycle division
Explanation:
In Cancer, cells divides uncontrollably as once the cell cycle is complete, the inhibitors do not restrict the cells from dividing further. These positive regulators of cell cycle if not controlled leads to continuous break down of cell and hence the cancer.
In a cancerous cell, enzyme reversing the wearing down of chromosome at the end of all cell cycle i.e telomerase expresses which in normal cases stops the cell division.