An experiment to investigate the effects of carbonate concentration in water on the rate of photosynthesis. Aim: The aim is to investigate how increasing carbonate in water can affect the rate of photosynthesis. Introduction: The rate of photosynthesis can be increased or decreased in many different ways. For example‚ by adding substances like alkaline or salt to the water‚ you can increase or decrease the acidity or basics‚ if the water has too much acidity‚ it can often delay the rate of photosynthesis
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Using the same steps as finding the size of the Paramecium specimen with the ocular reticle and the stage micrometer. Any object can be found by first adjusting the microscope for Kohler illumination and using the 10x objective lens to observe the object. Use the course focus knob and adjust until the object is clear. Afterwards switch the nosepiece into a higher objective and adjust the current magnification with the fine focus knob until the object is in an acceptable field of view. Using the ocular
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therefore continue the process of photosynthesis at a more rapid rate. I will conduct the experiment in a room with constant temperature as to minimise the chance of other factors that might affect the rate of photosynthesis of the pondweed (Cabomba or Elodea). I will also limit the chance of a change in concentration in the water that the pondweed will be set in. Furthermore‚ the result of the experiment will be based solely on the amount of bubbles I see‚ or what rate of oxygen is being made by the plant
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1 DESIGN 1.1 Defining the problem Focus / Research question How does osmosis work and what effect will this have on the raisin at different sucrose concentrations? Hypothesis The raisin in the beaker with most diluted sucrose solution will gain the most mass‚ therefore the control (0% sucrose solution) should be the most successful (in relation to the aim.) Background Information / theory Osmosis may occur when there is a partially permeable membrane‚ such as a cell membrane
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do things. The reactants of this are water‚ carbon dioxide‚ and although light energy is not a reactant‚ it is necessary once the energy from the seed is gone. Carbon Dioxide needs to be present for photosynthesis to happen. In lab 7.2‚ we put an elodea in one test tube‚ and nothing in the other. We blew into the BTB until it turned a yellow/green color‚ which meant it had carbon dioxide in it. We filled both
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Graphing Practice Name ___RaeAnne Phillips________________________________ Date __________ ▪ Save this file as a WORD document with a new name (LastNameGraph1) ▪ Use Create a Graph (http://nces.ed.gov/nceskids/graphing/) to graph the following data sets. ▪ Copy and paste the graphs AFTER each data set. ▪ Answer the questions AFTER each graph. ▪ Save Frequently! ▪ Email me (mruthenberg@findlaycityschools.org) the finished document. 1. Baby chickens‚ like all baby birds‚ require a constant
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Big Idea 2 Biological systems utilize free energy and molecular building blocks to grow‚ to reproduce and to maintain dynamic homeostasis. Living systems require both free energy and matter to maintain order‚ grow and reproduce. Organisms employ various strategies to capture‚ use and store free energy and other vital resources. Energy deficiencies are not only detrimental to individual organisms; they also can cause disruptions at the population and ecosystem levels. Biological systems must both
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Factors Affecting Photosynthesis Low light intensity lowers the rate of photosynthesis. As the intensity is increased the rate also increases. However‚ after reaching an intensity of 10‚000 lux (lux is the unit for measuring light intensity) there is no effect on the rate. Very high intensity may‚ in fact‚ slow down the rate as it bleaches the chlorophyll. Normal sunlight (usually with an intensity of about 100‚000 lux) is quite sufficient for a normal rate of photosynthesis. Open and Closed
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completely alike. For that I have examined and compared human cheek cells to Elodea leaf cells. First‚ I’ve scraped the inside of my cheek with the end of a swab stick to collect the cells then I’ve prepared them on a clean glass slide. When everything was set up I’ve observed the specimen at low‚ medium and high magnification‚ drawing a diagram for the high magnification one. Afterwards I’ve arranged the slide with the piece of Elodea leaf on the microscope stage and observed the cells in it at low and
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Make a wet mount of your cheek cells (see p. 4-6 for instructions). Examine your slide under the compound microscope and draw a few cheek cells at 400X in the space provided. Be prepared to discuss and present your drawings Make an Elodea leaf wet mount: obtain an Elodea leaf and make a wet mount — do not use methylene blue or other dye in this case. Examine the wet mount with your compound microscope at 400X. Focus on the fleshy layer inside the leaf (do not focus on the surface layer)‚ on the cells
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