A manometer is an device employed to measure pressure. There are a variety of manometer designs. A simple‚ common design is to seal a length of glass tubing and bend the glass tube into a U-shape. The glass tube is then filled with a liquid‚ typically mercury‚ so that all trapped air is removed from the sealed end of the tube. The glass tube is then positioned with the curved region at the bottom. The mercury settles to the bottom After the mercury settles to the bottom of the manometer‚ a vacuum
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oxygen in respiration. 2. To measure the rate at which an organism respires. 3. To learn how to set up the apparatus for respirometers. Introduction : Respirometer A respirometer is a device that been used to measure the rate of respiration of a living organism. This can be measured by calculating the rate of exchange of oxygen and carbon dioxide. A simple respirometer designed to measure oxygen uptake or CO2 release consists of a sealed container with the living specimen together with a
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In this experiment‚ three different test subjects were used in order to look for significant metabolic changes when the test subjects were exposed to different drugs and physiological changes. In this test‚ three different rats were used to see the different metabolic rates when exposed to different drugs and hormones on a normal‚ healthy rat‚ a rat with no thyroid‚ and a rat with no hypophysis. The significance of this experiment is to show the difference in metabolism and metabolic rate in healthy
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process of oxidative phosphorylation with reference to the electron transport chain; d state the fate of pyruvate in the cytosol when oxygen is available; h investigate the rate of oxygen uptake during respiration using a simple respirometer; e outline the Krebs cycle; h compare the fate of pyruvate in the absence of oxygen in animals and yeast. All living cells‚ and therefore all living organisms‚ need energy in order to survive. Energy is required for many different
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Lab Report Wednesday 8:00 A.M. Lab March 2nd‚ 2005 I. Introduction In this lab we are measuring the amount of oxygen used in both germinating and non germinating peas. We are measuring the oxygen consumption by taking a reading of a respirometer submerged in two water baths. The first bath will be cold water and the second warm to determine the effect of temperatures on oxygen consumption. Our negative control will be glass beads to measure to increase or decrease in atmospheric pressure
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difference 0 .85 x .67 x X .86 X X 5 .84 .01 .38 .29 .28 .84 .2 .01 10 .83 .02 .2 .477 .45 .84 .2 .01 15 .84 .01 .05 .622 .61 .84 .2 .01 20 .84 .01 .005 .665 .655 .84 .02 .01 Respiration in Beads‚ Germinating Peas‚ and Dry Peas Using Respirometers Beads Alone Germinating Peas Dry Peas and Beads Time Interval (min) Rates (ml of O2/min) 0-5 .056 5-10 .002 10-15 .054 15-20 .002
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peas germinating at cold temperatures 2.This activity uses a number of controls. What conditions must be kept constant?. Water baths held at constant temperature Volume of KOH is the equal in every tube Equilibration time is identical for all respirometers. 3.Describe and explain the relationship between the amount of oxygen consumed and time? The amount of oxygen consumed was greatest in germinating peas in warm water. The oxygen consumption increased over time in germinating peas. 4. Condition
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be constructing a device called a respirometer. The respirometer will be submerged in water and as the beans use oxygen‚ water will enter the respirometer. By measuring the volume of water that enters the repirometer‚ we can determine the amount of oxygen being used by the beans. You will be using three respirometers today. One will contain germinated soy beans‚ one will contain ungerminated soy beans with a small amount of gravel‚ and the last respirometer will contain only gravel. The soy
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the oxygen consumption and change in gas volume of respirometers containing either germinating or non-germinating seeds at different temperatures to measure the rate of respiration of these beans at different temperatures. Hypothesis 1.Germinating seeds have a higher rate of respiration as compared to non-germinating seeds and the glass beads. 2.As temperature increase‚ rate of respiration increase‚ greater increase in volume of respirometers. Materials 2 thermometers 120 germinating seeds
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respiration. With the data from vials 1-3 we can see that the dye travelled the most in the respirometer with germinating peas‚ this is because in cellular respiration germinating peas require the most oxygen to survive and grow. The dye is travelling because as the oxygen is being consumed by the peas‚ the oxygen is being taken out and the pressure within the respirometer decreases; pulling the dye towards the respirometer. While non-germinating peas are also alive‚ they currently require much less oxygen
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