pressure might have on cellular membranes‚ specifically when beet slices are placed in NaCl solutions of varying concentrations. 2. Hypothesis: The osmolarity will directly increase with increasing NaCl concentrations. 3. Control = Distilled Water – this was present in all solutions 4. The independent variable – salinity of the 6 solutions; while predetermined‚ the NaCl concentrations varied from 0% to 15%. The dependent variable – beet osmolarity; this lab’s focus was measuring the amount of
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characteristics. By defining these industries I will determine its effects on the other markets in that firm and whether or not other firms can or cannot succeed. If Industry A has twenty firms with a concentration ratio of thirty percent this is known as a monopolistic company with a low concentration. There are many characteristics of this type of industry one example is that it has limited control over the market; this is because there are many buyers and sellers. Another example is a monopolistic
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Solutions and Buffers Objectives : 1. To study and understand the principle theory and formula of preparation of buffer and solution. 2. To learn the methods of buffer and solution preparation. 3. To focus on concentration units of molarity‚ percentage of concentration‚ and dilution of solution. Introduction : When a substance‚ called a solute‚ is dissolved in another substance‚ called the solvent‚ a solution is formed. A solution is known as a homogeneous mixture of two or more substances
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The way that the molecules move across the cell membrane is that the carbon dioxide molecules spread out rapidly out your red blood cells down their concentration gradient to your lungs. When water molecules move freely through your cell membrane is called osmosis as we learned last unit. The reason why molecules move across the cell membrane is because they are small molecules that have no charge like oxygen which the cell membrane need to survive. So basically the molecules that move across the
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How is Osmosis Affected By the Concentration PLANNING Independent Variable The independent variable in this experiment is the thing that I will be changing in the experiment. This is the range of concentrations that have been obtained by diluting the original 1M solution of Sucrose. This is therefore the only thing that is going to be altered as I am investigating how different percentage of water molecules affects the weight of the the potato thus the rate and direction of osmosis.
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Equal volumes of 7mM ABTS and 35mM K2S2O8 (potassium per sulphate) were mixed and incubate for 24 hours. 1200 μl of the sample‚ from each concentration i.e. 50- 500 μg/ml‚( each of these concentration was taken in duplicate) was mixed with 1800 μl of ABTS solution was mixed with it for each concentration. Similar process was repeated for ascorbic acid concentration. All test tubes (ethyl acetate soluble fraction‚ ethyl-3-hydroxy-5-methoxy-4-methylbenzoate‚ ascorbic acid‚) labeled separately were shaken
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potatoes chips in solutions. The solution was different concentration of salt and water‚ one was 5% sugar‚ one 10%‚ one 15%‚ one 20% and one 30% salt concentration. We measured the mass of the potatoes chip before and after we put it into the solution. To keep the experiment fair we only changed one variable which was the salt concentration. The results that we got showed the chip went up in mass for 0% salt concentration and 5% salt concentration but for 10%‚ 15%‚ 20% and 30% it went down in mass
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membrane because Your answer : a. they are not lipid soluble. Correct answer: d. they are lipid insoluble or they are too large. 2. Which of the following is true of facilitated diffusion? You correctly answered: c. Movement is passive and down a concentration gradient. 3. Examples of solutes that might require facilitated diffusion include Your answer : a. glucose. Correct answer: d. all of the above. 4. Which of the following would not affect the rate of facilitated diffusion? You correctly answered:
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Processes and Active Processes Introduction In this lab we will establish a difference between the two types of cell transport mechanisms and their permeability. The first type of cell transport is passive processes which are driven by concentration or pressure differences in the interior and exterior of the cell. The second type is active processes which use energy known as ATP to power the transport. There are two main types of passive processes called diffusion and filtration. This can
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The absorbance at 260nm (which measures both the oxidized and reduced forms together) was 0.900. The molar extinction coefficient of NADH is 6220 L/mole·cm‚ and the molar extinction coefficient at 260nm is 18‚000 L/mole·cm. Calculate the molar concentrations of oxidized and reduced forms of the nucleotide in the mixed solution. 5. A mixture of ortho‚ meta‚ and para cresoles dissolved in cyclohexane may be analyzed spectrophotometrically because each exhibits an absorption in a region where absorption
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