Question

When you are exposed to sunlight for a long time, your skin, which otherwise appears normal, gets heavily tanned. What could be the reason?

A.
The genes for melanin pigmentation remain turned on and prepare more melanin than usual to protect the skin from photo-damage when it is exposed to sunlight for long time.




B.
The genes for melanin pigmentation remain turned off and synthesize more melanin than usual to protect the skin from photo-damage when it exposed to sunlight for a long time.




C.
The genes for melanin pigmentation are switched off to stop the synthesis of mel

Answer 1

Its A

Answer 2

Which one of these is closest to UV Rays? Maybe its just saying that in an over-complicated way! XD

Answer 3

http://boondocsmedicine.com/index.php?option=com_content&view=article&id=110:science-of-sunburn-and-skin-cancer&catid=40:birthdaysuitmanual&Itemid=61

Answer 4

http://www.sankofa.ch/texts/Melanin.htm

Answer 5

When your ethers are exposed to the chemical or protein structure in those perms and tents it causes it to lock into a certain position, then your hair will not change. That’s the same thing that happens to your chromosomes or genes. When ultraviolet rays are exposed to the chromosomes or the genes, in order for your genes to be able to do what they are suppose to do naturally, they have to be able to change. But when they are exposed to ultraviolet radiation they can’t. Thus when the time or need comes for it to change they will not be able to change. This will result in deformities in your body.

Answer 6

the DNA molecules are all covered with melanin. One of the things that melanin does is it actually absorbs ultraviolet radiation. Melanin is constantly reaching out towards the ultraviolet rays of the sun. Ultraviolet radiation has been found to be dangerous to protein. When protein is passed through ultraviolet radiation it actually causes the molecule to blend.

Answer 7

Still working on it....