in size and easier to study than human chromosomes. Discussion I observed that polytene chromosomes had formed just like my prediction. This result supports my hypothesis that endomitosis has occurred. I observed that polytene chromosomes were big‚ light and had dark banding patterns with all homologous pairs of chromosomes connected to chromocentre similar to Baudisch ’s observation in his 1977 paper. The disadvantage of the method used was that the extraction process was very hard and without lots
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BKristen Gershkoff Mr. Zabel Ecology 1 October 2012 How Abiotic Factors Affect the Biota The variation of abiotic factors in both the beach and the salt pond greatly affect the biota in those areas. At the beach there was a rocky landscape that rounded the water‚ while at the salt pond‚ there was more of a wet grassy area allowing different life forms or biota to thrive in each. Also‚ physical factors such as temperature‚ salinity‚ or dissolved oxygen levels allow for different life forms to
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isolated from everyone else because the do not fit in with everyone else ’s standards(Anderson‚14) This developmental stage in one ’s life in conjunction with the effects of a divorce‚ make the changes much more difficult to overcome and accept. " How an adolescent copes with the problems of a divorce depends upon their emotional health and maturity level‚"(Anderson‚ p.71). Each individual may react in his or her own
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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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ADI Lab investigation: Photosynthesis Introduction and goals: In our experiment we worked with photosynthesis‚ which is the process of light energy‚ CO2 and H2O being turned into food for the plant. CO2+H2O+ Light energy=C6H12O+O2 is the formula for photosynthesis. Our group hypothesis was trying to determine weather o2‚ water‚ or the nutrients of the soil determine the mass of the water. The guided question was “Where does the mass that makes up a plant come from?” Methods:
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It would be normal to think that immigrants and refugees will affect somehow the economy of the European nations‚ because more jobs and health coverage is required‚ but also more goods will be needed in order to meet a higher demand. Prices might increase‚ but it is important to be mindful that companies that sell inferior products might increase in revenues since refugees will be able to spend only a few euros on their goods. According to Huttl P. and Leandro A. (2015)‚ “ the net fiscal contributions
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Through this experiment‚ Egeria densa was observed using a microscope. The task was to observe and identify the different types of cell‚ cytoplasmic streaming‚ and plasmolysis of Egeria densa. First‚ the microscope was examined and investigated to master the use of the equipment. A microscope slide grid which was on the slide glass was required to be seen clearly using 4x‚ 10x and 30x. During the latter part of the experiment‚ the Egeria densa was observed using the microscope to understand the
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Photosynthesis and respiration are both processes that are necessary for the survival of organisms. However‚ in numerous ways these two processes are very diverse as they are responsible for distinct necessities. Therefore they both have similarities and differences. One major difference between the two is that photosynthesis takes place completely in plants while respiration occurs equally in plants and animals. Nevertheless to understand Photosynthesis and respiration‚ we need to understand what
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CIGARETTE SMOKE TO PHOTOSYNTHESIS Increased Carbon Dioxide Smoke of all kinds‚ including cigarette smoke‚ increases the amount of carbon dioxide where it is present (since smoke is itself produced via combustion). Plants use carbon dioxide to make sugars (during photosynthesis). Its increased abundance‚ therefore‚ makes it easier for the plant to obtain. Thus‚ smoking near a plant actually makes it easier for that plant to obtain much-needed carbon dioxide. Hampering Photosynthesis At the same
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Introduction: Trying to find a good‚ quantitative procedure that students can use for exploring photosynthesis is a challenge. The standard procedures such as counting oxygen bubbles generated by an elodea stem tend to not be “student” proof or reliable. This is a particular problem if your laboratory instruction emphasizes student-generated questions. Over the years‚ I have found the floating leaf disk assay technique to be reliable and understandable to students. Once the students are familiar
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