Ultraviolet

type of skin cancer, and is commonly caused by regular exposure to ultraviolet radiation. Squamous cell carcinoma is a slow-growing skin cancer, but it can spread to the tissues, bones, and lymph nodes where it can be hard to treat. Some factors make it more likely to develop squamous cell carcinoma including exposure to ultraviolet radiation, Bowen’s disease, and having a lighter skin complexion. More exposure to ultraviolet radiation whether it being the sun or a tanning bed can increase…

everyday, but the sun produces ultraviolet radiations that can damage the human skin and lead to skin cancer. Ultraviolet radiation is composed of three types of rays; ultraviolet A, ultraviolet B, and ultraviolet C. Ultraviolet C is the most dangerous type of radiation, but does not penetrate the earth’s ozone layer unlike ultraviolet A and B (Medicinenet, 2013). Ultraviolet A stimulates melanin pigmentation, as it is able to reach deep into the dermis. Ultraviolet B is mainly absorbed by the…

Miyamuera’s (et al., 2010) study, the effects of various wavelengths of ultraviolet was compared through repeated exposure of human skin to suberythemal doses of ultraviolet A and/or ultraviolet B for two weeks. The study showed that in the ultraviolet B tanned skin; there was a higher melanin content and ultraviolet-protective effects against DNA damage as there was in the ultraviolet A tanned skin. The tanning from ultraviolet A was caused by the photooxidation of existing melanin and…

Even though skin cancer impacts the lives of millions and is extremely preventable, people just aren’t doing enough to keep themselves safe. So, what can I do to keep myself safe? Learning what can cause skin cancer is a great step to prevention. Ultraviolet Radiation is the main cause of skin cancer. Although, there are many cases in which UV rays do not play a role in the contraction of skin cancer. Skin cancer is said to also stem from genetic abnormalities, a weakened immune systems,…

bacteria, Escherichia coli. The pGLO plasmid is found naturally in some organisms such as the A. victoria, otherwise known as the crystal jellyfish. GFP appears to glow by taking in the ultraviolet rays from sunlight and then emitting those rays as a lower-energy green light. This protein has many different practical uses in scientific research because of…

the experiment. The location and whether it is exposed to light or dark conditions will be the independent variable, while the growth rate of the E. coli will be the dependent variable. Once the E. coli have been given a week to recover from the ultraviolet light in their distinct locations, they will be diluted with water in a 90:10 ratio repeatedly, in order for the bacterial colonies to be counted. A pilot run will be performed ahead of time to see which dilution factor yields the most…

a pigment called Malanin that is in charge of skin tone and hair color. Malanin also protects the skin from the solar radiation avoiding damage on the body. When skin is exposed to the sun, melanocytes produce more melanin as a defense against ultraviolet rays. When there is a constant…

the skin. This DNA damage leads to cellular mutation and causes skin cells to multiply quickly, thus forming tumors and abnormal growths. There are several causes of skin cancer, including sunburn and ultraviolet light exposure throughout life with environmental and hereditary elements. Ultraviolet light, a type of electromagnetic radiation, is invisible to the human eye and comes from the sun. It is the foremost cause of skin cancer, associated with 90 percent of non-melanoma skin cancers and…

the sunlight? Some people enjoy sunbathing. Many people love sunlight but it is very dangerous for human skin. Sunburns, stains, wrinkles and slack are the cause of ultraviolet rays (UV) included in the wavelengths of the sun light. UV-A, UV-B and UV-C. These are different types of UV rays. UV-A occupies about 95% among all ultraviolet rays reaching the surface of the earth and it damages fibroblast cells. Fibroblast cells create the collagen, elastin and hyaluronic acids so if these are…

of three factors: skin exposure, ultraviolet rays, and Vitamin D. [Jablonski and Chaplin] These factors attribute to the wide spectrum of skin colors seen across the globe and explains why in Senegal, Africa there are some of the darkest skin pigments, but just 2700 miles north in Ireland, the palest skin pigments can be observed. While many of the biological adaptations…