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WorksheetsBiology of Skin Color
Total questions: 15
Worksheet time: 8mins
What does this image represent?
weather conditions
amount of ultraviolet light intensity
skin color
altitude
Melanin protects
Vitamin D breakdown
Folate breakdown
DNA mutations
Bones from breakdown
Traveling away from the equator, what happens in general to the amount of UV intensity?
The intensity decreases.
The intensity increases
The intensity stays the same.
It is impossible to predict.
Who would be most at risk of developing rickets, a bone disease caused by insufficient calcium absorption?
Children born to mothers with dark skin living far from the equator.
Adults with dark skin who live close to the equator.
Children born to mothers with light skin, living close to the equator.
Adults with light skin who live close to the equator.
Anyone who eats a diet that includes a lot of fish
What is Pheomelanin?
A type of melanin that produces dark brown/black skin
A type of melanin that produces reddish/yellow pigment
An enzyme that controls skin color
An enzyme that produces melanin
How does melanin protect cell's DNA from the damaging effects of Ultraviolet light?
It relies on folate
It doesn't you must use sunscreen
it activates vitamin D3 production which takes care of that
Forms a protective cap over the nucleus of skin cells
Rickets is a disease that causes:
Skin cancer
weak bones in small children
low folate levels
MC1R genes to turn off
What is the MC1R gene?
Gene that codes for Vitamin D3 production
Gene that codes for folate
Gene that codes for a protein involved in eumelanin production
Gene that codes for the production of melanin
