BIOLOGY DCN PHOTOSYNTHESIS LAB # 6 Effect of varying coloured filters on the photosynthetic rate of spinach chloroplasts The data below is just representative of what trends and relationships you were supposed to see. Numbers can vary. Absorbance at 620 nm for each treatment DCPIP + chloroplasts t=0 min. 0.93 0.945 0.905 0.915 t=3 min. 0.95 0.731 0.83 0.816 change in A620 -0.02 0.214 0.075 0.099 t=0 min. t=3 min. change in A620 t=0 min. t=3 min. change
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#2 Elodea and Photosynthesis by __________________ Name:_____________________ Class:_____________________ Teacher:_____________________ Date:_____________________ Elodea and Photosynthesis Introduction: Photosynthetic organisms (cyanobacteria) first evolved about 3.5 billion years ago and are the oldest know fossils on Earth. Cyanobacteria live in water‚ can manufacture their own food‚ and are one of the most important groups of bacteria on Earth. The Cyanobacteria have been important
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AP Biology Photosynthesis Lab Bethany Boyer Due 11/12/14 Lab Write-Up Questions First Experiment 1) The independent variable in this experiment was the presence of CO2 (carbon dioxide). The dependent variable was the speed at which the leaf disks started to float. 2) In the leaf tissue‚ the bicarbonate and light are combining to carry out photosynthesis. This will cause oxygen to collect in the leaf tissue‚ causing it to rise. 3) If we were to boil the leaf disks‚ the reaction would most likely
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Good morning! Today I’m going to talk about artificial heart as one of the most significant invention in the history of humanity. An artificial heart is a device that replaces the heart. Artificial hearts are typically used to bridge the time to heart transplantation‚ or to permanently replace the heart in case heart transplantation is impossible. Since the late nineteenth century‚ scientists have tried to develop a mechanical device that could restore oxygen to the blood and remove
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TOPIC: Artificial Intelligence SSP : To inform my listeners about some reasons in building Artificial Intelligence. TS : Developing Artificial Intelligence is a fun and exciting way to make computers think . Outline: I. Introduction A. Humankind has given itself the scientific name homo sapiens-man the wise- because our mental capacities are so important to our everyday lives and our sense of self. While the field of artificial intelligence attempts to understand intelligent entities
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Topic Outline: Purpose:To inform my audience about the development of Artificial Intelligence. Thesis:Artificial Intelligence has developed over the years and will continue to develop as the years go progress. Today i will explain the progression of Artificial intelligence from 13th century until now. Introduction I. Before i explain any further…. we must first need to know what artificial intelligence is II. Artificial Intelligence or AI is a computer‚ robot‚ or other mechanical device
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purpose of this lab was to investigate whether veins affect photosynthesis rate. It was predicted that having veins would decrease the rate because chloroplast might be less frequent due to the vascular tissue. For this experiment‚ 4 groups were set up: veins and no veins in CO2 solution‚ and veins and no veins in distilled water‚ the distilled water groups served as controls. These 4 groups were placed under a light bulb in order for photosynthesis to occur. No disks experience movement in the first 7
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Both photosynthesis and cellular respiration are the main pathways of energy transportation in organisms. However‚ the reactants and the products are exact opposites in photosynthesis and in cellular respiration. In photosynthesis‚ cells take in carbon dioxide (CO2) and water (H2O) by absorbing energy from the sun‚ and then the cells release oxygen (O2) and store glucose (C6H12O6). The formula of photosynthesis is: Light energy 6CO2+6H2O → C6H12O6+6O2
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Misael Acosta Photosynthesis Lab Report Ms. Rocha AP Biology 4th Period II. Intro/Background 1. In order for oxygen to be present photosynthesis must occur. Photosynthesis takes in light and CO2‚ and through a series of steps produces oxygen. Photosynthesis can be measured by either the disappearance of substrate or the accumulation of product. Examples include the production of O2 or the consumption of CO2. All the oxygen within the leaf disks will be removed before being placed
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Artificial intelligence can be viewed as a pro or a con depending on whom you talk to. First off‚ the definition of artificial intelligence is the science and engineering of making intelligent machines‚ especially intelligent computer programs. The most controversial part in this topic is the understanding of how much intelligence is going to be instilled in computer and machines. This makes many people nervous about the possibility of these machines and computers malfunctioning to the point of disaster
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