RESEARCH QUESTION How does the glucose concentration effects the time taken for the potassium permanganate to decolourise from purple to colourless ? HYPOTHESIS The higher the glucose concentration the shorter the time taken for the potassium permanganate to decolourise from purple to colourless. VARIABLES VARIABLE | UNITS | RANGE | METHOD FOR CONTROL | INDEPENDENT VARIABLE-Concentration of glucose solution | % | 5%10%15%20%25%30% | Different glucose concentration are tested | DEPENDENT VARIABLE-The
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Purpose: We are doing this experiment to find the best ratio of potassium nitrate to powdered sugar for a model rocket motor that will create the most thrust. We are also testing if adding fins will affect the flight distance of the rocket. Hypothesis: The best ratio for potassium nitrate to powdered sugar is 1 to 3 because Grant Thompson‚ who has experimented with the best ratio of powdered sugar to potassium nitrate‚ has stated that “The 1 to 3 ratio is best for creating the most amount of thrust
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Spirituality and the Physiology of Stress. Most Americans are suffering from moderate to high stress‚ with forty four percent reporting that their stress levels have increased over the past five years (Clay‚ 2011). Headaches‚ heart disease and high blood pressure have been associated with chronic stress. In the article Chronic stress may damage dna it states that Medical care professionals estimating that nearly seventy percent of doctor visits are directly related to ongoing stress (Sharf‚ n.d
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THE ROLES AND IMPACTS OF TRANSPORTATION IN NIGERIAN SOCIETY ABDULKAREEM Y. A. ABSTRACT. Transportation is the basis for economic‚ social and political development in most societies as it exhibits a close relationship to the style and quality of living of the society. Transportation plays an important role in the day-to -day activities of the society. Some of the roles it plays in our societies are the subject of this paper. This paper therefore attempts to illustrate the roles and impacts
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1. a. List four cell structures that were common to both plant and animal cells. (4 points) b. What structures were unique to plant cells? (2 points) c. What structures were unique to animal cells? (2 points)--Answer below: a. 1. Rough ER 2. Smooth ER 3. Golgi Apparatus 4. Nucleus b. 1. Chloroplast 2. Cell walls 3. Vacuole c.
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tablets. In the experiment they first tested how long an Alka-Seltzer tablet would dissolve in cold water ( 9 degrees) then repeated it two more times in order to calculate a mean. Then using a hot plate to heat the water‚ they tested another tablet in the hot water (51 degrees) to see how long it would take to dissolve and again did it two more times to calculate a mean. Finally they tested another tablet in water left on the hot plate for thirty-seconds (81 degrees)‚ preformed the experiment for two more
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Beetroot Membranes _Aim_ This practical will test the effect of temperature on the integrity of the membranes‚ _Introduction_ The cells of beetroot contain a pigment called betalain in their vacuoles. It is kept inside the cells by the membranes. If these membranes are damaged‚ then the betalain leaks out. The amount that leaks out can be assessed‚ as the leaked out pigment will color the water surrounding the cells. This information can be used to find out how temperature affects cell membranes
Free Cell membrane Standard deviation Cell wall
Give the term to the following definition 1. Carrier – company that transports or conveys goods – экспедиционная компания 2. freight forwarder - person or business that arranges documentation and travel facilities for companies dispatching goods to customers – транспортная компания 3. Supplier - company which supplies parts or services to another company; also called vendor 4. haulage contractor/haulier - company which carries goods by road 5. courier - company
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Modern methods of transport have transformed our world into a village. Is this a blessing or a curse? In some respects the topic-statement is true. Modern transport‚ especially by air‚ allows people to circle the globe in a few days‚ or hours‚ if an aircraft such as Concorde is used. Thus we have learnt to look upon distance as nothing. I can get to Paris from south-east England quicker than I can get to central London. So‚ the world has become a village? If so‚ the comparison ends there
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Which of the following is not an effect of sympathetic stimulation of the heart?(2.0 Score ) A.It increases the amount of calcium ion entering cardiac cells. B.It decreases the duration of systole. C.It decreases the slope of the pacemaker potential. D.It increases heart rate. E.It increases the rate of cross-bridge cycling in ventricular cells. 3. Which of the following statements concerning the capillaries is false?(2.0 Score ) A.Velocity of blood flow is slower in the capillaries than in
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