Botany-Passive Transport Answers Essay Example for Free

Botany-Passive Transport Answers Essay Substances necessary for normal growth and development of plants must continually be transported into cells while metabolic wastes must be eliminated so that they won’t accumulate inside the cells. For instance, water as well as mineral salts from the soil solution enter root cells while carbon dioxide and oxygen through tiny pores known as stomata in leaves and lenticels in stem. Excess oxygen not utilized during cell respiration as well as oxygen produced during photosynthesis is released to the atmosphere. In most cases, movement of these substances is along a concentration gradient, that is, from regions of greater concentration to regions of less concentration. Such type of transport is known as passive transport. Diffusion is a type of transport which is concerned with the movement of solute particles. Aside from concentration gradient, factors affecting the rate of diffusion include the temperature, size of diffusing molecules and presence of other molecules aside from the diffusing one. Osmosis, on the other hand, is another type of passive transport, which is involved in the movement of solvent (e.g. water) through a semi-permeable membrane. In osmosis, the presence of a differentially permeable membrane as well as differences in the concentration of the medium and the intracellular substance (i.e. cell sap) are factors to consider in determining the direction of water flow. (madel, dito gawa k ng visuals na puede,.. kung aong maisip mo di ko nga alam kung ano puede ndin ilgay †¦. Ano kaya gagamitin ntin? Naka-acetate oh sa manila paper kaw n bhala..;) Now the walls of these cells are made of a stuff a bit like a really fine netting that will let water through but not salt (a partially permiable membrane). Now water and salt prefer being mixed together than seperated, and water will move through the cell wall towards whichever side is the saltiest, this is called osmosis. This means that because outside is saltier the water leaves the cells, so the cells empty, and like a half full bag of water, go all floppy so the whole lettuce leaf goes floppy Now if you put the leaf in fresh water there are more salts in the leaf than in the water, so water will move back into the cells making them blow up like balloons again and become all strong and rigid. So if you have some old limp Lettuce soaking it in water for a while for a while will make it go crisp again. -The leaf in the salt water would be dehydrated, as its internal osmotic pressure would make water from the leaf seep through the cellular membranes. -its osmosis. the cells in the leaf are permeable to water but not salt,so if you immerse the leaf in salt water the cell will absorb water trying to balance the osmotic pressure .if you put the leaf in fresh water the cells will dump water,the salt water will cause the cells to absorb too much water and they will burst,the fresh water leaf will dehydrate and wrinkle,i think i got it right but dont quote me. -Your talking about tonicity, the salt solution is hypertonic and would pull fluid from the plasmodesmata in the plant cellsthe plain water being relatively isotonic would have little loss of fluid depending on where you live in the country and if you used tap water or bottled. Its the same concept of cellular dehydration and water toxicity in human cells.

Productivity Growth In the US :: essays research papers

It was said that once-in-a-century advances in technology are transforming our economy. The computer chip is doing for today's knowledge economy what electricity did for our industrial economy a century ago. Synergies in technology are driving acceleration in productivity growth that enables us to grow faster with less inflation. Economic progress is speeding up; the speed limit is rising.   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"Real GDP growth has averaged 4 percent for the past four years, with declining inflation. This almost doubles the 2 percent to 2.5 percent not long ago considered the maximum noninflationary potential. But we've been growing faster than potential and sustaining the unsustainable for four years and counting. Sounds odd, doesn't it? Our faster output growth is based primarily on faster productivity growth and secondarily on faster labor force growth†.   Ã‚  Ã‚  Ã‚  Ã‚  Productivity growth now appears to be at least 2.5 percent and rising. An increase from 1 percent to 2.5 percent is an increase of 150 percent, a huge jump with profound implications if sustained. Last year was encouraging. Productivity raised over 3 percent for the year and over 5 percent in the second half.   Ã‚  Ã‚  Ã‚  Ã‚  It was said that the United States entered the 21st century with its economy on a roll. GDP growth averaged more than 3 percent a year in the 1990s. The country created 17 million jobs, driving unemployment down to a 30-year low of 4.1 percent.   Ã‚  Ã‚  Ã‚  Ã‚  In the 1999-2000 the economy wasn’t doing so bad the unemployment rate was down, there were more jobs available, and production was doing well. When 2001 stated and even before then the economy was going down, many people were being laid off and so on. Then it happened the September 11th attack on the US, this attack has left the Productivity Growth In the US :: essays research papers It was said that once-in-a-century advances in technology are transforming our economy. The computer chip is doing for today's knowledge economy what electricity did for our industrial economy a century ago. Synergies in technology are driving acceleration in productivity growth that enables us to grow faster with less inflation. Economic progress is speeding up; the speed limit is rising.   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"Real GDP growth has averaged 4 percent for the past four years, with declining inflation. This almost doubles the 2 percent to 2.5 percent not long ago considered the maximum noninflationary potential. But we've been growing faster than potential and sustaining the unsustainable for four years and counting. Sounds odd, doesn't it? Our faster output growth is based primarily on faster productivity growth and secondarily on faster labor force growth†.   Ã‚  Ã‚  Ã‚  Ã‚  Productivity growth now appears to be at least 2.5 percent and rising. An increase from 1 percent to 2.5 percent is an increase of 150 percent, a huge jump with profound implications if sustained. Last year was encouraging. Productivity raised over 3 percent for the year and over 5 percent in the second half.   Ã‚  Ã‚  Ã‚  Ã‚  It was said that the United States entered the 21st century with its economy on a roll. GDP growth averaged more than 3 percent a year in the 1990s. The country created 17 million jobs, driving unemployment down to a 30-year low of 4.1 percent.   Ã‚  Ã‚  Ã‚  Ã‚  In the 1999-2000 the economy wasn’t doing so bad the unemployment rate was down, there were more jobs available, and production was doing well. When 2001 stated and even before then the economy was going down, many people were being laid off and so on. Then it happened the September 11th attack on the US, this attack has left the

Courseware Authoring Essay

Courseware authoring is when one develops computer-based learning materials.   In order for computer-based learning to be effective, the programs need to be designed and authored successfully. There are many courseware authoring tools available in the market today.   Depending on the industry, the tools vary from simulations to software that creates simple presentations.   The essential elements that need to be included in successful courseware authoring are all the components of different learning styles and learning strategies. According to Mr. Alfred Low, an educational technologist, there are four courseware authoring strategies that one can adopt to create superior learning environments (Low, 2002): †¢ The Socratic Approach: develops a questioning approach that engages students in a dialogue and enables students to see their own mistakes and misconceptions. †¢ Simulations/Games: uses the computer to develop simulation models of an imaginary world designed for pedagogical purposes. †¢ The Computer-As-Pupil: learners construct knowledge and develop problem-solving skills as they interact with the computer. †¢ The Intelligent Assistant: aims to provide support as the learner interacts with the program and monitors the student’s progress. There is no single courseware authoring strategy that will address every instructional problem.   Therefore a needs analysis must be performed to determine the desired final outcome of any instructional materials. Courseware authoring is simply designing computer-based learning tools.   There are many authoring tools and strategies to ensure the most complete success in the learning environment.

Analysis Of The Book Night By Elie Wiesel - 907 Words

In the book Night written by Elie Wiesel was mainly about how a young boy had to suffer the traumatic experience of existence and fatality at Nazis concentration camps. In the book, Elie Wiesel was the character â€Å"Eliezer Wiesel†. Eliezer was a young boy at the age of fourteen who lived in Sighet, Transylvania. During the lead of World War II, Eliezer was an extremely earnest young boy who desired to examine and practice Jewish theology. He also occasionally spent a great deal of time and passion on the Talmud, the gathering of Jewish decrees and ways of life that included the Mishnah and the Gemara. Eliezer’s father, who was a protuberant head of the Jewish neighborhood, strongly believed that Weisel was not of the right age to try and go forward with the doings. Still, Eliezer begins examining and practicing the cabbala with an instructor by the name of Moshe the Beadle. Mochà © teaches him that he must seek to ask God the right questions, even though we will never understand the answers he gives us. His instructor, Moshe the Beadle, returns from a near-death experience and warns that Nazi aggressors will soon threaten the serenity of their lives. However, even when anti-Semitic measures force the sight Jews into supervised ghettos, Elie s family remains calm and compliant. In spring, authorities begin shipping trainloads of Jews to the Auschwitz-Birkenau concentration camps. Elie s family is part of the final convoy. In a cattle car, eighty villagers can scarcelyShow MoreRelatedAnalysis Of The Book Night By Elie Wiesel945 Words   |  4 PagesElie Wiesel was born in 1928. In his book, Night, which was published in 1955, Wiesel depicts his personal journey through the German concentration camps by the use of his character Eliezer (Sparknotes). At the age of 15, he lives with his family in Sighet, Transylvania (Biography). His father Shlomo is very involved with the community there. Eliezer is deeply engaged in religious studies, being taught by Moshe, an older man in his community who is considered a lunatic by many (Sparknotes). InRead MoreAnalysis Of The Book Night By Elie Wiesel1778 Words   |  8 Pagesthemselves this question, whether they have fully grasped their personality or not, and during that difficult time, even the things you thought you knew about yourself are challenged. In the memoir, Night, the author Elie Wiesel, presents the story of his own time in Auschwitz during the German Holocaust. Elie, being Jewish, was deported into concentration camps in Hitler’s final solution. He underwent such things as witnessing death for the first time, extreme exhaustion, inhumane treatment, and seeingRead MoreAnalysis Of The Book Night By Elie Wiesel794 Words   |  4 Pages  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Night In the book Night by Elie Wiesel there are many instances where his use of imagery helps establish tone and purpose. For example Elie Wiesel used fire (sight) to represent just that. The fire helps prove that the tone is serious and mature. In no way did Wiesel try to lighten up the story about the concentration camps or the Nazis. His use of fire also helps show his purpose. â€Å"Never shall I forget that night, the first night in camp, that turned my life into one long night seven timesRead MoreAnalysis Of The Book Night By Elie Wiesel1017 Words   |  5 PagesIn the book Night by Elie Wiesel it says â€Å"human suffering anywhere concerns men and women everywhere.† This shows that the world’s problems are everyone’s problems. Everyone has their own responsibilities and when war occurs people tend to take on more responsibility than ever before. The United States is a prime example of making the world’s problems their own. When problems arise people step up and take responsibility. Like in the quote from Elie Wiesel, human suffering really is everyone’s problemRead MoreAnalysis Of The Book Night By Elie Wiesel1367 Words   |  6 PagesNight is the detailed account of Elie Wiesel’s experiences as a Jew in Germany during the Holocaust. Night is considered a memoir, however, Wiesel uses fictional characters to tell his story. Eliezer acts as Wiesel’s author surrogate, a fictional character based on the author, and narrates the story. Over the course of the text Wiesel exposes the full face of the dehumanization perpetrated against the Jewish people. Through persuasive oration, Hitler was able to manipulate the Germans and justifyRead MoreNight By Elie Wiesel : Book Analysis708 Words   |  3 Pagesto continue. Majority of people stopped eating, gave up their religious faiths and hope, welcoming the darkness to embrace them. Surviving was a constant struggle for these people and th e only way to overcome it was the acceptance of death. Night, by Elie Wiesel, is a memoir of the authors firsthand experience in the holocaust from his perspective as a teenage boy. The author includes concerns that individuals have, but never spoken aloud of, such as a home, family relations, and the effect this experienceRead MoreAnalysis Of The Book Night By Elie Wiesel1216 Words   |  5 Pageswhen I first saw the book. The images that they title brought to my mind is someplace where there is no light, no happiness.When you think of night you clearly think of physical darkness but I think night symbolizes a place without God’s presence, somewhere where there s no hope. The emotions that this title brought to my mind is sadness. Sadness because once you are in the dark there is nothing you can do but wait. Wait on your destiny. The impression that the picture on the book gave me was very vagueRead MoreAnalysis Of The Book Night By Elie Wiesel1045 Words   |  5 PagesIn the memoir Night by Elie Wiesel, Elie Wiesel is a yo ung boy who struggles to survive after being forced to live in the brutal concentration camp of Auschwitz. In Auschwitz, death and suffering is rampant, but due to compassionate words and actions from others, Elie is able to withstand these severe living conditions and overcome the risk of death in the unforgiving Auschwitz. As shown through the actions and words of characters in Night, compassion, the sympathetic pity for the suffering or misfortuneRead MoreNight Trilogy By Elie Wiesel1075 Words   |  5 PagesEnglish 2 Period 14 10 June 2015 Night Trilogy Criticism Elie Wiesel’s Night Trilogy is comprised of an autobiography about Wiesel’s experience during the Holocaust and the horrific struggle he faced while in concentration camps, and two other stories depicting the rise of Israel and an accident. The acclaimed Holocaust writer is most well-known for Night due to its effect across the globe. Dawn and Day are not autobiographies, yet they have lingering presences of Wiesel in the main characters and narratorsRead More Dawn by Elie Wiesel Essay716 Words   |  3 PagesDawn by Elie Wiesel In this report you will see the comparisons between the novel Dawn and the life of Elie Wiesel, its author. The comparisons are very visible once you learn about Elie Wiesel’s life. Elie Wiesel was born on September28,1928 in the town of Hungary. Wiesel went through a lot of hard times as a youngster. In 1944, Wiesel was deported by the nazis and taken to the concentration camps. His family was sent to the town of Auschwitz. The father, mother, and sister of Wiesel died in