WorksheetsStoryline Melanin
Total questions: 25
Worksheet time: 25mins
The protein that protects people's skin from UV rays is called...
Melatonin
Melanin
Melanoma
Mallow
Plants have the pigment chlorophyll that gives plants their green color. Identify the pigment found in the skin of humans that also provide color.
Melanocytes
Melon
Melanin
Epidermis
Identify the statement that would is INCORRECT regarding Melanin & skin color:
Those with more Melanin have darker skin.
Certain ethnicities have darker skin.
People with less Melanin are less likely to have skin cancer.
Protection from UV rays are more prominent in those with less Melanin.
What is the primary function of melanin in the human body?
To protect against UV radiation
To regulate body temperature
To aid in digestion
To enhance blood circulation
Which type of melanin is responsible for darker skin tones?
Eumelanin
Pheomelanin
Neuromelanin
Allomelanin
Melanin is produced in which type of cells?
Keratinocytes
Melanocytes
Fibroblasts
Adipocytes
Which of the following is a precursor to melanin synthesis?
Tyrosine
Tryptophan
Serotonin
Dopamine
What enzyme is crucial for the production of melanin?
Tyrosinase
Amylase
Lipase
Protease
In which part of the body is melanin not typically found?
Skin
Hair
Eyes
Nails
How does melanin affect the color of hair?
More melanin results in darker hair
Less melanin results in darker hair
Melanin has no effect on hair color
Melanin only affects hair texture
Which condition is characterized by a lack of melanin production?
Albinism
Vitiligo
Psoriasis
Eczema
What role does melanin play in the eyes?
It helps absorb light and protect the retina
It changes the shape of the lens
It produces tears
It controls eye movement
Which vitamin is known to influence melanin production?
Vitamin D
Vitamin C
Vitamin A
Vitamin B12
What is the relationship between melanin and skin cancer risk?
Higher melanin levels generally reduce skin cancer risk
Higher melanin levels increase skin cancer risk
Melanin levels have no effect on skin cancer risk
Melanin only affects skin texture, not cancer risk
Which of the following is a method to measure melanin content in the skin?
Spectrophotometry
X-ray
MRI
Ultrasound
How does melanin contribute to the tanning process?
Melanin absorbs UV radiation, leading to a darker skin tone
Melanin reflects UV radiation, preventing tanning
Melanin dissolves in sunlight, causing a tan
Melanin evaporates, leaving a tan
What is the effect of UV radiation on melanin production?
It stimulates increased melanin production
It decreases melanin production
It has no effect on melanin production
It destroys melanin
Which of the following foods can help boost melanin production?
Foods rich in Vitamin E
Foods rich in Vitamin K
Foods rich in Vitamin B6
Foods rich in Vitamin C
What is the role of melanin in protecting against UV radiation?
It absorbs harmful UV rays
It reflects UV rays
It refracts UV rays
It amplifies UV rays
Which of the following is a genetic disorder affecting melanin production?
Albinism
Diabetes
Hypertension
Asthma
How does melanin affect the color of the iris in the eye?
More melanin results in darker eye colors
Less melanin results in darker eye colors
Melanin has no effect on eye color
Melanin only affects eye shape
What is the connection between melanin and freckles?
Freckles are small, concentrated areas of increased melanin
Freckles are areas with no melanin
Freckles are caused by melanin deficiency
Freckles are unrelated to melanin
Which hormone is known to influence melanin production?
Melanocyte-stimulating hormone (MSH)
Insulin
Adrenaline
Thyroxine
What is the effect of aging on melanin production in hair?
Melanin production decreases, leading to gray hair
Melanin production increases, leading to darker hair
Melanin production remains constant
Melanin production stops completely
How does melanin contribute to the protection of the brain?
Neuromelanin helps protect neurons from damage
Melanin forms a protective barrier around the brain
Melanin increases blood flow to the brain
Melanin has no role in brain protection
