Does My Generation Have a Role in America's Future Essay

Does My Generation Have a Role in America's Future - Essay Example I believe that my generation has a role to play in America’s future. My generation has a role to play in America’s future in the sense that it is a generation which continues to engage itself in new technology and innovations which make life easier for millions of Americans. We are a generation which continues to explore the latest technologies – technologies – which make tasks easier and more efficient to undertake (BBC News, 2). These technologies also make tasks faster and less energy consuming. Considering the fact that production lines often take up more of our natural resources on a daily basis, technological innovations which consume less energy and which accomplish tasks efficiently are important novelties in securing a sustainable future. We have a role to play in America’s future because we, more than any other generation, have a greater affinity to these technologies (BBC News, 2-3). We understand its usage more than our older counterpart s, and we are eager to embrace these technologies and their implications in our daily activities. Moreover, we are eager to learn more and explore more of these technologies and to consider where they can take us (BBC News, 2-4). These technological innovations also come in the form of digital technology. I have a role in America’s future because further developments in digital technology will be continuously introduced in our society (van’tHooft, p. 2). This digital technology will be easier for us to utilize because, from our earliest years in the academe, this technology will be used as medium of instruction. Digital technology will become a major part of our life and our primary means of conducting transactions, business, and other activities. The older generation would likely be having a more difficult time adjusting to the use of digital

Competitive Antagonism Essay Example | Topics and Well Written Essays - 500 words

Competitive Antagonism - Essay Example Here, ACh is the agonist of muscarinic receptors. Mechanism of smooth muscle contraction – When ACh stimulates the G-protein coupled muscarinic receptors, a conformational change occurs, leading to the activation of the G-protein. The activated G-protein activates the intracellular enzyme, PLC (phospholipase C). This enzyme in turn hydrolyses PI(4,5)P2 (phosphatidylinositol-4,5-bisphosphate). This hydrolysis results in the production of two compounds – DAG (diacylglycerol) and IP3 (inositol-1,4,5-triphosphate). IP3 is soluble and diffuses through the cytosol. It binds to receptors on the endoplasmic reticulum resulting in the release of calcium ions (Ca2+) from the intracellular stores. The rise in intracellular calcium ions results in contraction of the smooth muscle. This happens when the intracellular calcium ions bind to calmodulin and activate it. Activation of calmodulin results in activation of the myosin light-chain kinase (MLCK) enzyme by the calcium-calmodulin complex, which then catalyzes the transfer of ph osphate group from ATP to myosin cross bridges. The phosphorylated myosin cross bridges then interact with actin, causing shortening of the fiber. This results in muscle contraction. The cross-bridge cycle is powered by ATP. Second messenger involved - IP3 (inositol-1,4,5-triphosphate) is the second messenger, as it relays the signal from outside the cell to the inside, resulting in the release of calcium ions that cause muscle contraction. Acetylcholine (ACh) and adrenaline (Ad) are two agonists whose actions are independent of one another and result in opposite effects. Ad brings about the relaxation of pre-contracted smooth muscle by acting via the G-protein coupled ÃŽ ²-adrenergic receptors on the cells. Mechanism of Ad induced relaxation of pre-contracted smooth muscle – Ad binds to the G-protein linked ÃŽ ²-adrenergic receptor causing a conformational change in the G-protein. This activates the enzyme adenylate cyclase.