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How does the epidermis guard against harmful radiation?
Melanin is the dark pigmentation contained in skin. It is contained in melanocytes, which are the cells which produce melanin. The purpose of melanin is to filter out harmful radiation from the sun. Mostly it does not. The best way is to use a sunscreen with SPF of 30 or more.
What melanin does?
Melanin shields the nucleus from damage by ultraviolet radiation. It keeps this radiation from damaging the skin and DNA. It also gives color to your skin, hair, and irises. Melanin is a pigment which gives characteristic color to skin. Its main role is to absorb harmful UV radiations and protect our skin cells from damage. It determines the color of your skin. Melanin colors hair, skin, eyes, feathers, etc.
What is melanin and what does it determine?
Melanin shields the nucleus from damage by ultraviolet radiation. It keeps this radiation from damaging the skin and DNA. It also gives color to your skin, hair, and irises. Melanin is a pigment which gives characteristic color to skin. Its main role is to absorb harmful UV radiations and protect our skin cells from damage. It determines the color of your skin. Melanin colors hair, skin, eyes, feathers, etc.
Which gases absorb ultraviolent radiation?
The gas which absorb ultraviolet radiation is ozone. It absorbs the harmful Uv radiations from the sun.
Why does the skin tan in the sun?
It's a defence mechanism against the Sun's harmful UV radiation, using the pigment melanin.
Why do darker skin absorb more UV?
Dark skin is dark because of an abundance of the pigment melanin. Melanin is a brownish chemical also found in hair. It has the property of absorbing UV radiation and re-emitting the energy as heat.
How does your body produce Melanin?
When you tan your body produces melanin so that you dont get different harmful rays in your skin. Although Melanin is harmful itself. Hope it helps
How does ozone protect us from harmful radiation that oxygen cannot?
Oxygen cannot absorb UV-B, and ozone can.
Can photosynthesis work when there is no light?
No it can't Yes it can, with a broad definition of 'light'. There exist a fungus that grows inside the chernobyl ruins that has so much melanin in it, it is nearly black. The melanin can absorb the radioactive (gamma) radiation that is abundant there, converting it to food, the same way chlorophyll captures light (which is just radiation with a much lower frequency than gamma radiation) and converts it to food.
What type of solar radiation does ozone absorb?
Ozone absorbs the harmful UV radiations of the sun. It is present as the ozone layer.
How does ozone protect us from ultraviolent radiation?
Ozone in stratosphere helps to absorb the UV rays. These are the harmful rays of the sun.
How does ultraviolet b affect melanin?
Exposure to ultraviolet B radiation increases the production of melanin.
