The Effect Of Photosynthesis On The Rate Of Photosynthesis

Abstract: During photosynthesis plants take light energy and turn it into chemical energy. The purpose of the study was to test the effect of various lighting conditions on the rate of photosynthesis. In this experiment the rate of photosynthesis is measured by timing how long it takes photosynthesis to occur in ten leaf disks that are in a solution of carbon dioxide. The prediction for this experiment was that if a plant receives more light, then it will have a higher rate of photosynthesis. The data supports the hypothesis, because the rate of photosynthesis is higher in direct sunlight than in the shade. This experiment untimely lead to the conclusions that light and carbon dioxide are necessary for photosynthesis to occur.†¦show more content†¦This light is then converted into a chemical energy by the chlorophyll and other pigments within the plant. This energy is used for the process of photosynthesis. During photosynthesis, water molecules split apart, releasing elect rons and hydrogen ions and producing oxygen gas. These electrons and hydrogen ions are then used to generate ATP and NADPH. Both ATP and NADPH are also used in the light independent reaction, which is the second part of photosynthesis. This reaction occurs in the stroma of the chloroplasts. In contrast to the light dependent reaction, this type of reaction can occur without light. During the light independent reactions of photosynthesis ATP and NADPH are required to form glucose. Adenosine triphosphate, often called ATP, is used to construct organic molecules from carbon dioxide and water. Nicotinamide adenine dinucleotide phosphate, often called NADPH, reduces carbon dioxide and produces monosaccharides for use by the plant. Materials Methods: ïÆ' ¼ Prepared solution containing 1.5 sodium bicarbonate in 300 ml water and 2 drops liquid soap ïÆ' ¼ Large plastic syringe 20-65 ml with no needle ïÆ' ¼ #3 cork borer with plungers ïÆ' ¼ Spinach Leaves ïÆ' ¼ Two plastic cups ïÆ' ¼ One glass beaker ïÆ' ¼ Timer ïÆ' ¼ Light source ïÆ' ¼ Paper Towels ïÆ' ¼ Cover: Cup covered by foil ïÆ' ¼ Mouse pad for cutting surface This experiment was performed using the procedure from the Photosynthesis in Leaf Disks Lab. First using a #3Show MoreRelatedThe Effect Of Photosynthesis On The Absorbance Rate808 Words   |  4 Pagesunder the lights, the absorbance rate continues to decrease toward zero. Once our 30 minutes were up, the absorbance rate in each tube was significantly lower than at the start of our experiment. In contrast the two control groups did significantly lower the absorbance. Each control lacked one of the vital aspects of photosynthesis, one being light, and the other being chloroplast. 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The energy is initially captured in the form of ATP and NADH in the Light Reaction. The Calvin Cycle then uses stored energy from ATP and NADH to produce energy

World War II The Great War - 884 Words

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Rhetorical Analysis of Antonys Speech 3.2 - 842 Words

Rhetorical Analysis of Antony’s Speech In Julius Caesar, Mark Antony is given the opportunity to speak at Caesar’s funeral by the conspirators the murdered him. Through his words, Antony seeks to cause dissent and let mischief reign over his audience, the plebeians of Rome. Antony uses rhetorical questioning to provoke the crowd into a fit of rage over Brutus’ words. Antony disguises his true intents in his speech, putting him at a moral high ground over Brutus. He finally uses ambiguous meanings in his words to hide his feelings about both Caesar and Brutus. In lines 1-4, Antony introduces himself to the crowd. â€Å"Friends, Romans, Countrymen†, is what he addresses the plebeians as, using pathos here to tie himself closer to the commoners†¦show more content†¦He then paints Caesar as a great leader to Rome by telling the crowd that â€Å"(He) hath brought many captives home to Rome, whose ransoms did the general coffers fill.†. Without Caesar’s great deeds, where would the public of Rome be? Antony questions if Caesar’s acts for the whole of Rome are truly ambition here. From lines 19-22, Antony uses inflection to not praise Caesar literally while also proving his innocence. â€Å"When that the poor have cried, Caesar hath wept: Ambition should be made of sterner stuff!†, here Antony uses both pathos to link Caesar and the commoners and circumlocution to question Brutus without calling him a liar to the public. From lines 23-29, Antony assures the crowd that while his eulogy has provided opposing points to Brutus’ rhetoric, he means not to call Brutus a liar or praise Caesar while actually doing both at the same time. â€Å"I thrice presented (Caesar) a kingly crown, which he did thrice refuse: was this ambition?†, says Antony. Antony’s ethos here, that any man that refuse a crown would obviously not be ambitious, contradicts events the reader has seen. Although Antony persuades the crowd, as all rhetoric should, that Caesar refused the crown three times, in actuality, Caesar was said to loathe giving back the crown three times before suffering from his epilepsy. Antony, for the last time, brings up that â€Å"Brutus says he was ambitious; and, sure, he is an honorable man.†. He has,

Digital Rights Management and Fair

Question: Discuss about the Digital Rights Management and Fair. Answer: Introduction: The given articles refer to the development of remote control over digital content. This is primarily done through various DRM (Digital Rights Management) systems which claim that they provide persistent protection and therefore can potentially distinguish between an authorised user and a copyright infringement. The size of the global DRM market pegged at $ 3.5 billion also is indicative of the high demand of these systems so as to provide protection of digital content (Stamp, 2002). The DRM system is essentially based on cryptography with companies making tall claims about the security offered in this manner (Sharpe, 2004). The major problem with regards to DRM is that the security offered by these cannot be verified unless they are open to public scrutiny. However, till now the designs of these systems is not available in the public domain. It is an established trend that the any cryptosystem that is not vetted by the public and the cryptographic community is not trustworthy (Stamp, 2002). As a result, there is a potential fear that all claims about DRM systems are just marketing gimmicks. Further, those DRM systems that have been fielded have not proved very secure. Besides, various experts also express their doubts over the tall claims made by DRM vendors (Sharpe, 2004). Additionally, the DRM system also has its own risks. Further, the security of the DRM system can be strengthened using tampering proof hardware but this would give rise to additional risks as this hardware would not be controlled by users but remotely based third parties (Stamp, 2002). Thus, it is imperative that equilibrium needs to be established between risk and security offered. References Sharpe, V. (2004), Digital Rights Management and Fair Use by Design, Technical Communication, 51(3), 455 Stamp, M. (2002), Risks of Digital Rights Management, Communications of the ACM, 45(9), 120