Nonsteroid hormones, which include proteins, peptides, and amines, exert their effects by binding with specific receptor molecules on the target cell membrane. Each receptor molecule has a blinding site, to which the hormone binds, and an activity site, which interacts with membrane proteins. The binding of hormones and membrane proteins to the receptor alter the function of enzymes, which ultimately has various effects on biochemical activities that take place within the cell. In this case, the hormone acts as the first messenger, whereas the biochemicals that induce cellular changes are referred to as second messengers. Ultimately, the changes that occur within the cell are recognized as a response to the hormone.
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By skin-to-skin contact
(handshakes or hugs).
By touching a contaminated surface (blanket or doorknob).
Ultraviolet (UV) radiation from the sun is the number one cause of skin cancer, but UV light from tanning beds is just as harmful. Exposure to sunlight during the winter months puts you at the same risk as exposure during the summertime. Cumulative sun exposure causes mainly basal cell and squamous cell skin cancer, while episodes of severe blistering sunburns, usually before age 18, can cause melanoma later in life. Other less common causes are repeated X-ray exposure, scars from burns or disease, and occupational exposure to certain chemicals.
Answer:
A
Explanation:
Based on the information provided in this scenario it can be said that this advertisement would raise concern since the supplement has not been evaluated by the FDA, it might not be safe. The Food and Drug Administration (FDA) is in charge of making sure that products are 100% safe for the end consumer before a product hits store shelves. A product such as the one being advertise may actually be harmful since it has not yet been approved by the FDA. Also advertisement companies' goals are to make people aware of the product and convince them to buy it, therefore they can twist and spin actual facts in order to accomplish those goals.
