
UV Radiation and Skin Effects Quiz
Quiz
•
Biology
•
1st Grade
•
Practice Problem
•
Medium
Melanie Pykett
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of UV radiation penetrates the dermis and contributes to skin aging and cancer?
UVC
UVB
UVA
All of the above
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which enzyme group is activated by UV radiation, leading to collagen and elastin breakdown?
Reactive oxygen species (ROS)
Metalloproteinases (MMPs)
Melanin synthesases
Elastinases
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common clinical manifestation of abnormal elastin production due to UV exposure?
Bruising and purpura
Wrinkles and sagging skin
Hyperpigmentation
Photosensitivity
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What kind of DNA damage is commonly caused by UV radiation?
Chromosomal rearrangement
Thymine dimers
Oxidation of DNA bases
Telomere shortening
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which condition is characterized as a pre-cancerous lesion caused by UV damage?
Actinic keratosis
Seborrheic keratosis
Malignant melanoma
Basal cell carcinoma
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key mechanism by which UV generates free radicals in the skin?
Interactions with keratinocytes' DNA
Direct damage to collagen
Activation of vitamin D synthesis
Stimulation of melanin production
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of skin growth is commonly linked to chronic UV exposure but is benign?
Actinic keratosis
Squamous cell carcinoma
Seborrheic keratosis
Malignant melanoma
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