The Effect of Alcohol Concentration on the Leakage of Pigment from Essay

The Effect of Alcohol Concentration on the Leakage of Pigment from Beetroot Cells - Essay Example The cell membrane is made up of phospholipids molecules and proteins. The phospholipids are present as a bilayer and that acts as the semi permeable membrane. The phospholipid bi-layer is formed because of the hydrophilic and the hydrophobic ends of the phospholipid molecule. The water loving hydrophilic head is present in the inner region of the membrane and the hydrophobic water hating tail region is present on the outer membrane region. This arrangement prevents the polar solutes from moving in and out of the membrane. This arrangement generally allows the passive diffusion of the hydrophobic molecules. The entire membrane is held intact because of the non-covalent interaction of the hydrophobic tails with a little fluidity.The betalains pigment of beet root is sequestered in the vacuole of the beet root cells. When the membrane condition is altered because of temperature variation, pH variations, the membrane becomes weak and loses its pigment content. The phospholipid bi-layer is soluble in an organic solvent. Ethanol is the most common organic s olvent. When ethanol is used for the extraction of the pigment from the beetroot, it dissolves the phosphor lipid bi layer and thus makes the membrane permeable. The betalains thus diffuses out of the membrane due to the concentration gradient. As this is a water soluble pigment, it results in the color of the solution. The intensity of the red-purple color in the solution will indicate the diffusivity level of the pigment. Hence the effect of concentration of ethanol may increase the color of the solution. This is a predictive hypothesis. The predictive hypothesis will give a tentative answer to the question that is under the investigation. (faculty.uca.edu). So the experiment was designed such that the independent variable ethanol is applied to the experimental group and it is controlled in the control group. According to our hypothesis, the control group had 0% ethanol and the experimental group had

Cultural Perspectives from another Country - Pakistan Essay

Cultural Perspectives from another Country - Pakistan - Essay Example (http://en.wikipedia.org/wiki/Pakistan) The second most populous Muslim country was formed on the 14th of August 1947. Before Pakistan gained independence, the country was under the rule of the British Empire. The British entered the Subcontinent as the British East India Company, a private trading company, when the Mughals had Jehangir as an Emperor. Slowly and gradually the huge Mughal Empire began to crumble because the emperors and nobles alike had grown so accustomed to living a life of pure pleasure with the wealth their ancestors had accumulated. Many historians blame Aurangzeb, the Emperor Shah Jehan's son for sowing the seeds of decline, as it was after he started ruling that the kingdom began to fall apart. Aurangzeb couldn't rule very well, his administration left a lot to be desired. The nobles were often power hungry and the consequence of the lack of supervision was that they became highly powerful at court and the emperors couldn't control them. The empire was huge and when rebellions broke out it took the emperor months to take decisive decision to end them. The cost of maintaining a huge army to continuously quell these rebellions and that wasn't the only cost. When an emperor died, the succession dispute resulted in a waste of huge sums of money. When riddled with such... In the beginning The East India Company only had a few bases along the coast of the Subcontinent but then they started expanding and spread out to Bombay (Mumbai), Calcutta (Kolkata) and Madras (Chennai). The EIC were good at fighting and protected India from other European countries such as France, Portugal and Denmark. After the battle of Plassey and the exploitation of Bengal the British government decided that the misgovernment of India had to be stopped. So they passed the India Act in 1784 in which the British government took direct control of Indian possessions and appointed a Governor-General. From then on the British influence could be seen everywhere. However things weren't made a 100% percent official until the 1857 War of Independence (as the Indians called it) or the 1857 Mutiny (as the British called it). The Indians, the Indian army in particular rose in revolt against the British and they were crushed. The British government took complete control of India and a member of the British cabinet, the Secretary of State for India. The Governor -General was now called Viceroy and in 1877 the British Queen Victoria became the Empress of India. Gradually the Muslims in India began to become aware of their individuality and cultural identity. They were of the opinion that they could not live together with the Hindus and under the regime of the British. They wanted an independent country of their own. Sir Syed Ahmed Khan was one of the earliest pioneers of the independence movement. His "Two-Nation-Theory" was later supported by people like Allama Muhammed Iqbal and Chaudri Rehmat Ali Kahn. Both Allama Muhammed Iqbal and Chaudri Rehmat Ali Kahn had studied in Britain and when they came back they both believed that a