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What can you learn about an organism or tissue by looking at how many of its cells are actively dividing?

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Final answer:

Analyzing active cell division provides insights into an organism's growth, development, and health status. A high rate of division indicates rapid growth or repair, while unregulated division suggests disease like cancer. Monitoring cell division can involve observing mitotic figures or measuring metabolic products.

Step-by-step explanation:

By analyzing the number of cells that are actively dividing, you can learn about an organism's growth, development, and overall health. Cell division is a vital process in which a single cell divides into two or more daughter cells. In multicellular organisms, such as humans, it is also necessary for maintenance, as in the constant regeneration of skin and blood cells. In an organ or tissue, a high rate of cell division might suggest rapid growth, such as during childhood or in a healing wound.

On the other hand, if cell division is abnormally high and uncontrolled, as seen in cancer cells, this can indicate the presence of disease. The rate of cell division can be calculated by observing certain markers, such as mitotic figures in tissue samples, or through indirect methods like measuring ATP production or consumption of oxygen. These methods reflect how actively the cells are undergoing mitosis, which is part of the cell cycle. Understanding the rate of cell division can also hint at the organism's developmental stage or its ability to recover from injury.

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