Raul has scraped his knee and noticed that after a week it had almost completely healed. Raul wandered how the skin was able to repair itself while looking exactly the same as his non-injured skin. In 3-5 sentences explain how mitosis plays a role in healing skin after injury and is able to maintain the look of existing, non-injured skin. (4 points)
4 answers
Injured skin produces C-rays that allow for skin to knit itself back together. These C-rays are always present in cells, but are only activated during mitosis by injured skin. This is why there is sometimes scarring left after injury, as the C-rays are not activated as much as healing occurs.
In complex organisms, mitosis is responsible for repairing damaged tissues and helping an organism grow. Mitosis is a type of cell division. During mitosis, one cell duplicates all its parts and genetic information and then splits to form two identical cells where one had been before. Human cells formed in mitosis are diploid, which means they contain two of each chromosome, one from each parent. Like any other complex organism, your own body uses those new cells both to grow and to repair or replace damaged tissues.
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