skin two

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  • Miss. Almonte, what does melanin protects and how it does it? 
  • great question jimmy, i will answerd all your questions.
  • Melanin protects the cell by forming a super nuclear cap,is like an umbrella, that protects the cell nuclei (nucleus)from UV light expolsion that can caused mutations in your genes. And By doing this, it can also helps to prevent sunburn damage that could result in DNA changes and, subsequently, several kinds of malignant (dangerous/harmful) skin cancers
  • I feel like their is something missing, but I don't know what it is?
  • thats because we are not done jimmy, you need to know how uv light and vitamin D production connects together.
  • The good thing about melanin jimmy, is that it doesn't protect the cell 100%, because if it did we had no way in producing enougth vitamin D for our whole body. A certain amount of shortwave ultraviolet B (UVB)  must penetrate (pierce) the outer skin layer in order for the body to produce vitamin D. That's why if you live in a high altitude place that dosen't have enougth sunlight, most likely you will be deficient (low) on vitamin D, depending on what type of melanin you have.
  • cell
  • what do you mean, depending what type of melanin you have, does it even matter?
  • yes, it does matter Jimmy, I will explain it to you. 
  • Yes it all depends what type of melanin you have, because if you live in a high altitude place like north Europe were there is little of sun and you have eumelanin that is a dark thick pigment, then the ultraviolet B (UVB), can not penetrate the outer skin layer so that your body makes vitamin D, because the pigment is too thick, but if you have pheomelanin that is a light thin pigment, then the (UVB) will be enought to penetrate the outer skin.
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