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Biology Enzyme Experiement - 2263 Words

An enzyme is a biological catalyst. It speeds up a reaction by lowering the activation energy required to start the reaction. It speeds up a reaction, but remains unchanged unless certain limiting factors are introduced. It is composed of polymers of amino acids. An enzyme has an optimum pH and temperature. When an enzyme is at its optimum conditions, the rate of reaction is the fastest. In their globular structure, one or more polypeptide chains twist and fold, bringing together a small number of amino acids to form the active site, or the location on the enzyme where the substrate binds and the reaction takes place. An enzyme has an active site, which has a unique shape into which only a substrate of the exact same unique shape can fit.†¦show more content†¦My hypothesis is that the more acidic the milk is the faster it takes for the milk to curdle when renin is added to it. As pH increases, enzyme activity increases until it reaches an optimal point in which enzymes dena tures and as pH increases, enzyme activity decreases. Trends in this experiment don’t make proper sense due to inaccurate measurements of the temperature of the milk and inaccurate measurement of pH level. Though I can say that at pH level 7 and 11 the time taken for the milk to curdle were really low and close, at pH level 8 the time taken was high and at pH level 9 no result was taken maybe because the enzyme doesn’t function the at this particular pH level. In conclusion my hypothesis was correct, the more acidic the milk the faster the time it takes for the milk to curdle. Due to inaccurate measurement, correct results might not have been obtained thus impacted on our results. VARIABLES Independent variable – the pH level of the substrate Dependant variable – The time it takes for the milk to curdle Controlled variable - The size of the test tube, amount of milk poured into each test tube, amount of renin mixed inside test tube, same weather condition, same temperature of the milk inside the test tube. METHOD - Get half a tablet of renin and put it insideShow MoreRelatedInvestigating The Rate Of Enzyme Activity Within A Experiment Essay1179 Words   |  5 PagesThe purpose of this report is to determine which catalyst effect the rate of enzyme activity within a experiment. Enzymes lower the energy of activation by binding with substrate in chemical reactions to allow the reaction to occur. energy activation is the reguired amount of energy required amount of energy needed to start a chemical reaction. This decreases the faster the enzyme reaction goes by the shape change on an active site. the conclusion is that the enviromental conditions such as pH, temperatureRead MoreThe Effect Of Temperature On The Rate Of Enzyme1839 Words   |  8 PagesObjective: Biology 160 Lab 5 Part A: Scientific Methodology Enzyme Activity 4/28/15 The purpose of this experiement is to determine the effect of temperature on the rate of enzyme reaction, specifically testing the reaction rates at 0, 23, 37, and 55 degrees Celcius. Introduction: 1. According to the book Campbell Biology, an enzyme is a biological catalyst that reduces the activation energy in a reaction, allowing the chemical reaction to take place at a faster rate. A substrate binds to theRead MoreThe Rate Of Movement Of The Porcellio Scaber Moved Slower At Lower Temperatures Essay1862 Words   |  8 Pageschanged when it was placed in different temperatures and therefore if the temperature affected their ecological niche. My graph is slightly different compared to the Rosehill College’s practical investigation of porcellio scabers graph, found under the biology section on the Rosehill College webpage. The Rosehill College porcellio scaber graph from 5 °C to 15 °C decreased in average rate of movement and from 15 °C to 25 °C, it increased in average rate of movement. My graph did not decrease at any point as

Gym Visit Free Essays

Visiting Local My Local Gym Every person in the world would like to have a perfect body including myself. In order to have a healthy and a strong body, I would need to consider going to a gym to work out. Before going to the gym I did not knew of what to expect of a gym. We will write a custom essay sample on Gym Visit or any similar topic only for you Order Now Certainly, I would expect a wide selection of equipment available. I would enjoy a well-educated staff who knows everything I would want to know about working out. The Bally Total Fitness that just turned into LA Fitness, is a perfect match for me. I would definitely enjoy working out at the LA Fitness gym. The closest gym to my neighborhood was LA Fitness. This gym has six different club amenities and features. It starts at a reasonable price for working out, a price you cannot deny to become a healthy person. When I entered into LA Fitness I knew to expect a good environment for training and physical activities. At the LA Fitness gym they provide the members with an enormous amount of equipment. Throughout my tour with Monica, the tour instructor, she informed me that there are various amount of duplicity equipment for manageable workouts. For example, some equipment that I seen where treadmills, stationery bicycles, bench press, dung bells, medicine balls etc. All equipment found inside the gym is up to date and easy to handle. The work out machines informs you how to use them and lets you know what parts of your body you will be working out on. The best part of LA Fitness is the helpful trainers that make you lead to your goal. Working out with a personal trainer brings out good benefits to club members. All trainers designed a customized workout plan for each individual member. The workout plan has an ongoing motivation and supporters the member. All LA Fitness member received one hour fitness assessment before going in your own way. Having a trainer helps you work out effectively to attain your goal. Your trainer also shows you personally how the exercise machine is properly used and as well as teaching you the main principal of the workout that it is being performed. For better results for your own health trainers are there to pace you and keep you from not over doing the exercise. You have the opportunity of being inform from a personal trainer to aware you from your strengths and weakness. With a variety of different occupational centers to take advantage. To set a pace and a weekly routine you can choose from various events and relaxation options. You can choose from running in treadmills to relaxing in sauna or swimming your stress away. For comfortable workout you can also join in groups to follow a special routine provided by a trainer. Some group fitness classes that are provided in this facility are kickboxing, yoga, zumba, body conditioning, and cardio jam. Fitness groups are available from 7am through 8:15p. m from Sunday through Saturday. If you have a child and you have your workout routine set to a certain time day care is provided with an additional charge of $10. 00. The day care at LA Fitness has a schedule from Monday-Friday from 8:00 a. m. until 1:00 p. m. and 4:00 p. m. – 9:00 p. m. Saturday 8am until noon. The LA Fitness gym has its operating hours as followed Monday through Thursday from 5 a. . until midnight, Friday from 5 a. m. until 10 p. m. , and Saturday and Sunday from 6 a. m. through 8p. m. To join the gym has different pricing start from $9. 95 for one person for one week with no Initiation fee. No contract needed to get started and you pay as you go. Additional charge for certain amenities, such as racquetball, kids club, personal training, and juice bar. La fitness is a good environme nt to look up to and enjoy being part of with a various amount of different equipment to use and different fitness groups. In conclusion, La Fitness would be a great starting point towards a healthy life style. With having a gym full of new exercise machines and trainers on the side giving you good advice toward your exercise. Trainers will always support and motivate you to attain your healthy goal. After having a good workout you can always help yourself to enjoy the comfortableness of a sauna. The gym would always be open throughout the day and night to help you release some stress. It is an inexpensive opportunity for you to get in shape and start feeling healthy. How to cite Gym Visit, Papers

The American Revolution (The Revolutionary War) free essay sample

Between the years 1754, which gave us the French ND Indian War, and 1774, when the first Continental Congress Meeting was held, America slowly but surely took its rightful place as the just leaders Of the lands from sea to shining sea. Its independence did not come easily, and many men died for its fortification, but all for a worthy cause. Once we took the seat we so aptly deserved we forged a nation that would be looked at as the land of opportunity, and the sole nation in the world which was truly blessed by God.In this paper, will endeavor to answer how the formation of our great nation came about, what steps we took to achieve independence, ND most of all what caused of the Revolutionary War. There really IS no set beginning to this magnificent story of independence and liberation; however, the start to the true action and the first steps in the direction of who we truly were as a nation, began with The French and Indian, which began in 1 754, or more specifically with the Treat y of Paris, signed in 1763. We will write a custom essay sample on The American Revolution (The Revolutionary War) or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The French and Indian war was one of the biggest eye openers for the Americans. Although it seemed the British took our side with the struggle against French and Indian population attacking, the resulting debts and fees room the war were all placed upon the colonies. The war was so incredibly expensive that the united Kingdom and Prime Minister William Pit were at the point of declaring bankruptcy; however, the Empire had a better idea. British authorities used the colonists for their own personal gain, by applying fees, taxes, and stubborn acts all to benefit the United Kingdom. This definitely raised the first of many red flags against the United Kingdom.So the British stood tall after the war, expecting from its victory territory over the land, as well as its debts to be paid off from no less than the ones who sided tit them in the war. All of this benefited the British and harmed those in the colonies. This started what was to be the next 20 years of rebellion against the Empire, and Americas gradual realization of their true destiny, independence. From this destitute stage of debt and potential bankruptcy emerged the dreaded Acts which were heavily enforced and filled to the brim with unfair treatment from the British and a desire for personal gain from the colonists.The first of many was the Sugar Act of 1764. This Act was a tax on everything from sugar, of course, to coffee. It was enforced however, on just about every American necessity. This act was so heavily enforced that they placed armed soldiers on the streets. The next act that was placed upon the colonists was the Stamp Act of 1765. This act enforced taxes on just about every transaction that happened through paper, any printed document, or any legal document. It went as far as placing taxes on playing cards. The Americans soon began to see just what was happening in their own nation.They were supposed to be a nation free from oppression or in the very least have a say in what was going on. This was the largest problem. Here were the colonist being taxed and having these laws thrown upon them, and yet they had no say in where this money went, how much was taken, or what was being taxed. All they could do was either sit back and accept it, or revolt, and it was on the absolutely contrary for the people of America to sit back and take it. The Americans wasted no time and in 1765 leaders from Massachusetts formulated a plan: The Stamp Act Congress. From this congress the famous words no taxation without representation came forth. To an even farther agree, the Americans revolted by sending street mobs to tear down British offices in Massachusetts and New York. They also took to smuggling and importing their goods under the noses of the British, by undermining the taxes and causing the British to lose revenue. On March 5th, 1770 the escalation of the revolution was at a breaking point. The tension was extraordinarily high and something was about to give. A simple street fight with snowballs and horseplay erupted and shots began to fly.The Boston Massacre, quickly labeled by our own Sam Adams, was since remembered as he day when the tension broke. The war was officially starting, and the adversary was the British. The revolt against the Empire was growing stronger every day. Late in the year of 1 770, what would soon be known as the Committee of Correspondence would be created. This committee was designed to fortify the colonies against the British. As individuals, the American people could do nothing, and they began to realize this more and more as the years progressed.However, as a nation, as states united, and as one group standing tall together against their rivals, they could be a serious threat to the Empire. This committee liberated our land and united our voices to speak out against the British. Soon newspapers, books, letters, and even local businesses and groups gave voice to the Revolution. Even with all of the revolting going on, the British persistently continued to regulate laws and enforce acts on the nation. The next act enforced on Americans was the Tea Act of 1773. However, at this point in colonial America, we had no intent to sit idly by.The next step in our resistance was a deliberate spit in the face to the British and their regulations, and one of the cost known instances of the American revolution; The Boston Tea party. Led by Sam Adams himself, over seven thousand people stormed the harbors of Boston dressed as Indians and dumped over 342 chests of tea overboard. To the Americans, this wasnt just saying no to tea from the British, this was much more than that. It was truly a statement to the Empire saying, We dont need you, we dont need your tea, and we definitely dont need your taxes. This was Americas true colors being shown by saying that its time for us to be an Independent nation of liberty and freedom. From this point on, nothing was the same. The British retaliated hard with more acts including the Intolerable Acts, restricting local meetings, and even closing down the Boston Harbor altogether. It was all crashing down, and the war was about to begin. But with the same, were not going to take it attitude that the American people always had, they would not let any of this oppress them. They continued with their meetings and to a higher caliber than before. They began to draft, in writing, what it was specifically that they wanted out oftener own personal nation. They were not only planning for their new nation, but also for the war that would get them there. People who were called Minute Men were standing by at all times ready at a minutes notice in case they were needed to fight for their country and needed they were. On April 18th, 1775 over 1,000 soldiers led by Paul Revere and William Dates marched to Concord where the shot heard round the world started what would forever change our nation. It would light the flame that was the inevitable Revolutionary War.America is now known as the greatest nation in the world and home to husbands of cultures, races, and religions. It is truly the land of the free and the home of the brave. However, it definitely didnt get to this stage without a fight. Our founding fathers longed for a nation that was more than what they had; a nation that would stand up against opposing threats and tyrannical dictators who thwarted their freedom. This freedom that we so desperately desired was not just Americas way of running from their responsibilities. It was a choice, a desire, a strive for a better place where God could lead, and we would follow in his path for us.