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jasenka [17]
3 years ago
7

When studying cell division in tissue samples, scientists often calculate a mitotic index, which is the ratio of dividing cells

to the total number of cells in the sample. Which type of tissue would have a higher mitotic index, normal tissue or cancerous t
Biology
2 answers:
Bess [88]3 years ago
6 0

Answer:

Cancerous tissue has high mitotic index.

Explanation:

yarga [219]3 years ago
4 0

Answer:

Cancerous tissue has high mitotic index.

Explanation:

Mitotic index may be defined as the number of dividing cells divided by the total number of cells. Cell proliferation can be measured by mitotic index.

Cancerous cells are highly dividing cells and are less differentiated than normal cells. Cancer cells have higher mitotic index because the number of dividing cell is more in cancerous cell than the normal cells.

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Explanation:

Membrane potential can be defined as the difference in electric charges inside and outside of a cell. The resting membrane potential (RMP) occurs when there is no net current across the membrane and therefore the cell is in a non-excited state. At the RMP, sodium ions (Na+) are more concentrated inside the extracellular fluid (ECF) than inside the intracellular fluid (ICF), while potassium ions (K+)  are more concentrated inside the ICF. The diffusion of K+ outside the cell triggers its hyperpolarization, by becoming the membrane potential more negative compared to the resting potential. As the potential nears +35 mV, the voltage-regulated potassium channels are open, thereby K+ ions leave the cell down its concentration gradient, while voltage-gated Na+ channels become saturated and inactivate.

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