Answer: 1). Epinephrine binds to a cell-surface receptor; the activated receptor stimulates production of the second messenger, cAMP.
Explanation: Epinephrine action begins by binding of the hormone to its specific receptor protein in the plasma membrane known as adrenergic receptor. This protein is a member of a large family of receptors called G-protein coupled receptors. The binding of epinephrine to its receptor triggers a conformational change in the receptor that affects its interaction with a Gs protein. The bound receptor triggers the replacement of GDP bound to Gs by GTP, thereby activating Gs protein. Gs is a heterotriemeric protein having an alpha, beta and gamma subunits. The activation of the Gs protein causes the alpha subunit of the protein to dissociate and move to another membrane protein called Adenylyl cyclase and activate it. The activated of adenylyl cyclase catalyzes the formation of cyclic AMP (cAMP).
It would be a <span>Myxedema Coma.
Please let me know if this is correct!</span>
Answer: Option C.
Emissions from coal burning plants which then rain down on water ways.
Explanation:
Mercury has been found to be most serious and most common water contaminants. Mercury causes water pollution. It is released into the air and falls back in water ways. When it's get to water ways, bacteria changes it to methylmercury, if absorbed by aquatic organisms destroyed them. When consume by humans, it causes neurological disorder and kidney problem. The two major sources of Mercury contaminants in water ways are emissions from burning of coal plants and waste incinerators.
The answer is B, 50%. The percentage of Americans adults who do not exercise on a regular basis is 50%,although the percentage figure is a bit more than that. According to survey around 52% and less than 55% do take regular exercise. So its seen that almost half of the Americas adults don't take exercise of their bodies according to healthy way living.