Investigate one factor which will affect the rate of photosynthesis

Investigate one factor which will affect the rate of photosynthesis Introduction Photosynthesis is the process by which plants make their own food. For photosynthesis to occur the plants need sunlight energy, the energy is absorbed by a green pigment called chlorophyll which is found in the leaves of the plant. This energy then combines with water molecules from the soil, and carbon dioxide from the air. After this, a type of sugar called glucose is produced which can be used for the plants energy and oxygen is made as a byproduct. The equation for photosynthesis is: 6CO2 + 6H2O -> C6 H12 O6 + 6O2. Any acceleration in the process of photosynthesis will naturally result in the production of more organic compounds and consequently more plant growth. There are certain things that affect photosynthesis called limiting factors. These are: light intensity, temperature, amount of carbon dioxide available and the amount of water available. Light intensity speeds up photosynthesis because sunlight is needed for the chemical reaction to happen and if the concentration of light is greater, more of it can be used to make glucose and oxygen. The reason is similar for how carbon dioxide and heat affect photosynthesis. Heat speeds up photosynthesis because the enzymatic reactions require the enzymes to be at a warm temperature to work at their

  • Word count: 2397
  • Level: GCSE
  • Subject: Science
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Hydens Trumpet Concerto and Aranjez Analysis

Classical Music Written By: Trish Allan Music is the emotional response between time and space. Throughout the ages, music has developed many different forms from various different eras. These eras show what was popular at the time and particular musical elements help us to categorize what pieces and composers go into which era. The Classical Period was from 1720-1820. Although it only lasted 70 years, it made long lasting impressions on the orchestra that we still see today. As well as the Classical Period, there was the Neo-Classical Period, which, after a number of years, brought back the Classical age with some added elements. Which leads to say; which is more classical? There are two pieces analyzed in this text. Haydn's Trumpet Concerto composed by Joseph Haydn in the Classical period and Concerto De Aranjuez composed by Joaquin Rodrigo in the late Neo-Classical period. Joseph Haydn composed his first and last trumpet concerto in 1796 in Vienna after his second return from England. It was particularly composed because of the development of the new valve trumpet. When the valve trumpet was developed, Haydn wanted to explore the wider tonal range of this newly developed instrument. And in doing so, he created his only Trumpet Concerto, known today as Haydn's Trumpet Concerto. Written in three movements, Allegro I, Andante II and Allegro III, the most popular and famous

  • Word count: 1921
  • Level: GCSE
  • Subject: Music
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Lord of the flies- english coursework how well does chapter one prepare us for the rest of the novel.

Lord of the Flies coursework (How well does chapter one prepare us for the rest of the novel?) William Golding's novel 'Lord of the Flies' was published in 1954. The novel explores the need for democratic organization, and tackles many themes including evil in mankind, people are inherently evil and the need for political democracy. The novel was inspired by many experiences of Golding's life; William Golding was an English teacher at an all boys school for a few years and in one of his English classes he tried to debate with the boys, it ended very badly with the boys fighting and showing they can not control themselves, this is also very relevant as this would have provided Golding with enough knowledge of schoolboys and their behavior, for this novel to be so realistic. William Golding also served in the Royal Navy and the novel was published during WWII. These past experiences are linked to the themes in which Golding choose to tackle in his novel, for example evil and savagery. Also this novel is said to be very similar to the book 'Coral Island' by R.M Ballantyne. Although Golding takes the character's names and story line, he changes it in many ways as he projects the evil and savagery onto the boys. The opening chapter of LOTF is very effective in introducing the characters, themes and symbols, and in this essay I shall explore how Golding does this. Golding

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  • Word count: 1628
  • Level: GCSE
  • Subject: English
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Comrades And Episodes.

Comrades And Episodes. "Granddad why are you in a wheel chair" said Mr Gates grandson. "I was lucky to still be alive today if it wasn't for three of my comrades in the war," he started to explain. "Please can you tell me Granddad?" the boy asked. "Well it all started many years ago..." Many years ago in the war It was a cold and windy night. I could only just feel my feet through the tight, but thin leather on my boots. My heart was pounding, as I walked across no mans land, the wind suddenly caught up. I thought about my family, as I approached the barbed wire. I gazed into the distance and saw, to my dismay I metallic object. I then saw a flash, and heard a bullet fly past my head, I dropped to the floor as the second hit me in the leg. I felt the bone snap and jolt back through my flesh, the blood oozed out. I tried to move it; I was just trying in vein, as I knew that I would never be able to use it again. I tear ran down my cheek, not in pain, but the fact that I thought, I would never see my family again. I pushed down on my leg as hard as I could, the blood just would not stop. I suddenly herd voices I recognized them as Timmins, Jones and Bard. I heard them talk about ex-lovers and the sort. I thought about their tunics that did not fit, and there faces that I thought I would never see again. I then thought to myself, I am only a hundred yards away I can make

  • Word count: 607
  • Level: GCSE
  • Subject: Science
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Write an essay in which you compare and contrast The Earth on Turtle's Back, When Grizzlies Walked Upright, and The Navajo Origin Legend. Focus on two areas; discuss what each myth reveals about customs, attitudes, and beliefs

Unit 1 Essay Test Zohra Sayani 09/20/04 Topic: Write an essay in which you compare and contrast The Earth on Turtle's Back, When Grizzlies Walked Upright, and The Navajo Origin Legend. Focus on two areas; discuss what each myth reveals about customs, attitudes, and beliefs pr each tribe that created it and also, compare and contrast customs, attitudes, and beliefs within the three stories. When this world came to being, there was no single explanation of its origin. Many Native American tribes and other religious groups throughout the world created their own origin or creation myths for the earth on a whole or just the people of the earth. The basis of these myths was cultural and social beliefs of the many different tribes around the world. The Earth on Turtle's Back, When Grizzlies Walked Upright, and The Navajo Origin Legend are the three creation myths by the Onondaga, the Modoc, and the Navajo. Each of these myths are by far original and different, yet at the same time share many of the customs, attitudes, and beliefs of each of the individual groups, which were revealed to us throughout the stories. Origin Legends not only teach how a natural aspect of the world came to being, but also dives into the soul of the tribe that created a specific legend. If read closely enough, so much can be learned about the lifestyle of a whole group of people,

  • Word count: 1479
  • Level: GCSE
  • Subject: English
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Cotton Questions

Cotton Questions by Cerys Speakman Q) Cotton, one of the oldest fabrics in existence, remains one of the most popular despite the introduction of many modern textiles. Say why you think this is so by referring to the advantages of cotton as a fabric. A) Capacity to absorb moisture: When the wax coating is removed from the fibre during processing the cotton readily absorbs moisture and allows the moisture to evaporate. Cotton absorbs moisture and then allows it to evaporate. This makes it really comfortable to wear as it allows the human skin to breathe leaving it feel pleasant and comfortable. Its strength: Cotton is slower to dry than some other fibres. However cotton fibres are stronger when wet than dry. This means that most products made from cotton can be washed frequently. Minimal build of static electricity: All fibres acquire small charges of static electricity due to friction. Static charge accumulates less readily on cotton than other fibres which means it does not attract dirt or dust to the same extent ass some other fibres. the rough surfaces of some cotton yarns, however, mean that fabrics made from them may soil more easily. Absorbency: Water can penetrate the fibre so that dirt can be washed out. Cotton therefore is relativity easy to keep clean, Conductivity: Cotton is a good conductor of heat, which makes it very comfortable to wear. Good

  • Word count: 575
  • Level: GCSE
  • Subject: Design & Technology
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Discuss the theme of education in ‘Hard Times’ and a ‘Kestrel for a Knave’.

Hard Times & A Kestrel for a Knave Discuss the theme of education in 'Hard Times' and a 'Kestrel for a Knave'. Both the authors of 'A Kestrel for a Knave' and 'Hard Times' are critical of the education system of the era of time that they have came from and experienced. Charles Dickens, who wrote 'Hard Times' is criticising a 19th Century concept of life called utilitarianism which affects education in a bad way. Barry Hines is critical of the selective school system favoured in Britain and only started to fade in the 1970's. Both writers share the same view that pupils' individuality and freedom are being destroyed by the systems, and are being turned into either knowledge spewing machines, or are left neglected to rot on the loser shelf. The children's' lives are followed in the books, and are portrayed as victims of the systems. The consequences of this are both shown to be negative; in 'A Kestrel for a Knave' young Billy Casper's life is an awful one, and in 'Hard Times' when they reach adulthood they are unable to function properly. Both systems are shown to be failures. 'Hard Times' reflects social concerns in the mid 19th century. Society used to focus on 'the home' but the Industrial Revolution saw a change in this. People now focused on work, it was the object of their lives. This period brings to life 'Utilitarianism' - this was the solution to any problem or

  • Word count: 3402
  • Level: GCSE
  • Subject: English
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Stalin: Man Or Monster? Sources Question

Stalin: Man Or Monster? . Source A is giving a bad impression of Stalin. This source shows mountains of skulls and Stalin is just stood there looking like he is proud of a personal achievement. It depicts Stalin as a monster, and these "pyramids" are the results of his purges. Both sources B and C contradict source A. Sources B and C both show Stalin in a positive nature. In both sources Stalin is with his people. In B he is mixing with low class workers. The workers and Stalin are very relaxed and laughing with each other. The background is very promoting of Stalin as it has a huge hydroelectricity power plant and has obviously been put there by Stalin. In source C however it is not about Stalin's achievements, this source shoes Stalin reaching out to his people. In this picture there is no sense of fear. Genuine enthusiasm meaning the propaganda is working. This source gives the impression he is really caring to his people. Even still he is seated above the woman he is shaking the hands of whereas in source B he is there as an equal. 2. Source D (i) is written to show Stalin as he wants to look. Stalin describes himself as better than the other people in the story. He is the only one who cares about this dead mans life. This shows this source was meant for propaganda. Of coarse this is another reason why it could be inaccurate. If he cared for human life so much

  • Word count: 2534
  • Level: GCSE
  • Subject: History
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Enduring love analysing chapter 1.

English Literature. Enduring Love Analysing Chapter 1. Ian McEwan begins this novel with a very eventful chapter. Chapter 1 sets the scene for the rest of this book. The novel begins with the narrator and his girlfriend (Clarrisa) in a field. Then danger emerges out of nowhere and the narrator finds himself trying to secure and bring down a balloon that has a child entrapped in it. However the situation ends in disaster as the Balloon proves to heavy for the crew of 5 to pull down. They all let go except one John Logan who goes up with the uncontrollable balloon and dangles from the ropes in mid air until he let go and accelerated towards the floor, no forgiveness or kindness just ruthless gravity. The book instantly hooks readers; McEwans first sentence instantly makes you brain work. ' The beginning is simple to mark.' What beginning? As you read deeper into the first chapter you begin to realise that the narrator is very descriptive of everything beside himself. After reading the first chapter you are left with a number of different questions in your head. Who is the narrator? McEwan is very effective with the way he writes this first chapter, he creates suspense that entices you to read on. The narrative viewpoint is very interesting during chapter 1. We don't know anything about this man except he has a girlfriend called Clarissa, he is very scientifically and

  • Word count: 819
  • Level: GCSE
  • Subject: English
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Factors, Which Affect the Rate of Reaction

Factors, Which Affect the Rate of Reaction There are certain factors which affect the rates of reaction in an experiment. These factors are: * Pressure * Temperature * Concentration * Surface area / particle size and * The addition of a catalyst The factors that I will be concentrating on are temperature, concentration and surface area / particle size. Pressure Pressure influences the rate of reaction only when the reactants are in their gas phase. Pressure does not affect them much when they are either solids or liquids. By increasing the pressure, you squeeze the molecules together so you will increase the frequency of collisions between them and their surrounding container. Temperature When the temperature of a reaction increases, heat is supplied to the particles of the reactants involved. This heat energy is converted into kinetic energy which all of the particles acquire. This means that more particles collide with each other per second. In addition, the faster the particles are travelling, the greater proportion of them which will have the required minimum energy for reaction to occur, for example, raising the temperature of a reaction by 10°c will double the rate of the reaction. Concentration A chemical reaction will occur only if the particles of the reacting substances are allowed to come into contact. This is based on the kinetic theory:

  • Word count: 667
  • Level: GCSE
  • Subject: Science
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