Effect of Temperature on Content of Vitamin C Introduction A daily intake of Vitamin C is essential for humans. Without it‚ the disease scurvy develops as sailors‚ explorers and people during the long winters in the Northern hemisphere found before the time of Captain Cook. The British Navy started giving sailors lime juice to prevent scurvy on long voyages in 1795. Vitamin C is found in high levels in foods such as oranges‚ limes‚ lemons‚ blackcurrants‚ parsley and capsicums. Vitamin C is water
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During muscular exercise‚ blood vessels in the muscles dilate and blood flow is increased in order to increase the available oxygen supply‚ to allow the muscles required to function properly. Up to a point‚ the available oxygen is sufficient to meet the energy needs of the body. However‚ when muscular exertion is very great‚ oxygen cannot be supplied to muscle fibres fast enough‚ and the aerobic breakdown of pyruvic acid cannot produce all the ATP required for further muscle contraction. During
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Law Coursework In this essay I will discuss mainly two things; formation of a contract between two parties‚ the offer and the acceptance. I will report on their relevance for each of the 3 parties involved‚ finally I will give legal advice to Chuck (offeror)‚ Arnold and Sylvester (offerees). First we must distinguish whether Chuck’s advert was an invitation to treat or an offer. An example of a case involving an advertisement as an offer was Carlill v Carbolic Smoke Ball co. [1] This case involved
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The effect of temperature on the cell membranes of beetroot cells and amount of pigment released. Apparatus • Corer size 4 • White tile • A Beetroot • Automatic Water Bath • Segregated knife • A thermometer • Stopwatch Method: • First take the white tile and the corer. Then collect a cylinder of beetroot by pushing the corer into the beetroot and withdrawing it. The cylinder remains inside the corer- so push it out with the end of a pencil. • Collect 3 cylinders
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Hypothesis The optimum temperatures of Alcalase and Savinase will be different. Above and below their optimum temperatures activity will decrease. Biological explanation This investigation is designed to look at the effect of temperature on the activity of the proteases Alcalase and Savinase. By the end of it I hope to know the optimum temperature of both proteases. The substrate I am going to use during the experiments is the protein gelatin‚ which is a translucent‚ colourless‚ brittle solid
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CHAPTER 2: Social Pressures What is SOCIAL PRESSURE? It is the influence that is exerted on a person or group by another person or group. It includes rational argument‚ persuasion‚ conformity and demands. (Psychology dictionary) Peer pressure Peer pressure is a social pressure that causes individuals mostly teens in doing something they have never done or don’t usually do. Peer pressure can affect the family because there will be changes in attitudes from a member. Certain indications like when
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the Effect of Temperature on the Permeability of Membranes The permeability of membranes can be altered in several ways. From previous preliminary work I know that reagents‚ for example detergents and alcohol alter the arrangement of the phospholipids in the membrane allowing substances to leak out of the cell. Temperature also affects the membrane. As membranes relay on protein molecules to allow molecules to enter and leave the cell through facilitated diffusion the temperature must not exceed
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To investigate the effect of temperature on an enzyme controlled reaction Introduction and planning For the investigation of enzymes‚ I am going to conduct an experiment to see how temperature can affect the rate of reaction of enzymes by testing it with starch. The enzyme that we are going to use is called amylase. We are going to test this enzyme with starch. By mixing amylase and starch solutions together under different temperature conditions‚ we can record the rate of reaction by taking a
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There are 2 additional electrons in the outer shell. Oxygen is more electronegative than hydrogen What type of bond joins the carbon atom to each of the hydrogen atoms? Question #13 Each carbon-hydrogen bond involves a single pair of equally shared electrons. What type of bond is joining the two hydrogen atoms? Question #8 A covalent bond is one in which electron pairs are shared. A molecule is defined
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The effect of temperature on the permeability of cell membranes Introduction For my coursework‚ I intend to assess how temperature affects the plasma membrane of a cell. For this I will use the cell of a beetroot. Background What is a cell membrane? The cell membrane‚ also called the plasma membrane is a semipermeable lipid bilayer which is the surface of all cells that surrounds the cytoplasm. The membrane is called a bilayer as it has a double layer of phospholipids. Within the cell membrane
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