Purpose and Hypothesis: Purpose To determine if light intensity affects the rate of growth in Brassica rapa. Hypothesis If the plant that is exposed to high intensity light grows more‚ then plants can adapt to absorb more photons for photosynthesis. Eventually‚ the rate of photosynthesis will top out‚ and stop increasing‚ due to the lack of one of the components necessary for photosynthesis. Background: Photosynthesis is a process used primarily by plants but sometimes by other organisms to
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Cami Petrides Mrs. Babich Algebra Period 4 April 1‚ 2014 Extra Credit Project 12. When you flip a light switch‚ the light seems to come on almost immediately‚ giving the impression that the electrons in the wiring move very rapidly. Part A: In reality‚ the individual electrons in a wire move very slowly through wires. A typical speed for an electron in a battery circuit is 5.0x10 to the -4th meters per second. How long does it take an electron moving at that speed to travel a wire 1.0
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In this lab‚ we extracted spinach pigments‚ and analyzed what colors of light these pigments absorb. By using TLC plate‚ hexane and acetone‚ I separated the pigments of spinach‚ and discovered that the main pigments were green and yellow. This works because with different polarities‚ pigments move at different rates. Hexane and acetone were also used to separate chlorophyll and carotene from spinach. Since they are polar‚ they can separate organic and inorganic things. From the experiment‚ I know
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1. Describe the mechanism by which green fluorescent protein (GFP) is able to emit fluorescent light and why ultraviolet light is required to visualise it. (5 marks) When GFP is hit with UV light‚ the chromophore is hit by a photon. This changes the chromophore from ground state (A) to A*‚ which is a highly excitable state. Due to such a highly excitable state not being able to remain so for very long‚ the A* state chromophore emits a proton‚ lowering its state to I*‚ the energetic I. This I* state
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The majority of the experimentation in this project relied on the idea that there is a relationship between concentration and absorbance of a solution. This is easy to understand if you can visualize the particles in the solution; and this is especially true if the particles in solution portray a distinct color. The more particles there are in the solution‚ the more they will obstruct the path of the light. This occurs the most at the analytical wavelength‚ where the most light is absorbed by
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The Effect of Concentration on Absorbance Background Information The purpose of the “Determining Solution ‘Concentration’ Using A Spectrophotometer” lab was to use a spectrophotometer to find the relationship of concentration and absorbance obeying the Beer-Lambert law‚ which states concentration and absorbance are directly related‚ to then further determine the concentration of three unknown solutions. With the assumption that the solutions obey the Beer-Lambert law it is predicted that as concentration
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It’s all around us. Radiation is categorized into two groups: ionizing‚ and non-ionizing. Ionizing radiation consists of particles‚ gamma rays‚ or X-rays with sufficient energy to create ionization in the medium it passes through. It has enough energy so that while an interaction with an atom takes place it can withdraw tightly bound electrons from an atom‚ thus making the atom charged or ionized. It includes alpha particles‚ beta particles‚ and gamma rays. Ionizing radiation has made a large impact
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Research Review Article Evidence-Based Use of Pulsed Electromagnetic Field Therapy in Clinical Plastic Surgery Berish Strauch‚ MD; Charles Herman‚ MD; Richard Dabb‚ MD; Louis J. Ignarro‚ PhD; and Arthur A. Pilla‚ PhD Background: The initial development of pulsed electromagnetic field (PEMF) therapy and its evolution over the last century for use in clinical surgery has been slow‚ primarily because of lack of scientifically-derived‚ evidence-based knowledge of the mechanism of action.
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ionising and non-ionising radiation there are many side effects‚ risks and limitations. In ionising radiation‚ there is a risk of cell mutation which can result in developing cancer if there is overexposure of the radiation to the patient’s. In the worst state this radiation can result in death. This type of radiation is not recommended to the groups of people like children‚ pregnant women or the elderly as it will expose them to higher radiation than non-ionising radiation. On the other hand‚ non-ionising
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The Effect of Radiation in Inducing Mutation On the Growth of Zea mays1 Milanie Joy S. Baradi BIO 30 Section S-1L October 10‚ 2011 ____________________ 1A scientific paper submitted in partial fulfillment of the requirements in Biology 30 laboratory under Professor Neilyn O. Villa‚ 1st semester‚ 2011-2012. ABSTRACT To determine the effects of gamma radiation in inducing mutation on the growth of corn (Zea mays)‚ an experiment using corn seeds exposed in to different
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