What would happen to the observed and specific rotation values if you were to halve the path length of the cell used while keeping the concentration the same?
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What would happen to the observed and specific rotation values if you were to halve the path length of the cell used while keeping the concentration the same?
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- The Paramecium, is large enough to allow the insertion of a microelectrode, thus permitting the measurement of the electrical potential between the inside of the cell and the surrounding medium (the membrane potential). The measured membrane potential is -35mV in a living cell. What would happen if you added valinomycin to the surrounding medium which contains sodium and potassium ions? Valinomycin will ( Select ) which will result in the membrane potential [ Select ]Make a table with a scale of absorbance and the concentration of protein in Chromatin sample from the following data for excel graph Absorbance=660nm following data are of tubes with concern A =0 B=0.036 C=0.011 D=0.001 E=0.027 F=0.020 G=0.032 H1=0.176 H2=0.183 I1=0.150 I2=0.171 also plot the graph??Which of the following options shows the correct order of fastest to slowest motion of chloride ions, glycine and proteins through the separating gel? Chloride ions > Proteins > Glycine Glycine > Chloride ions > Proteins Chloride ions > Glycine > Protein Protein > Chloride ions > Glycine You are trying to separate a mixture of AMP, ADP, and ATP using ion exchange chromatography. Select appropriate supplies for your experiment. A positively charged column, deprotonated buffer, NaCl of same concentration. A positively charged column, protonated buffer, NaCl of increasing concentration. A negatively charged column, protonated buffer, NaCl of increasing concentration You cannot separate nucleotides using ion exchange chromatography.
- For the serial dilution, your stock solution must have a concentration of 3.5 mg/mL. How much diluent must be added to the 5.3 mg/mL red cell to prepare the stock solution? Show pertinent solution/s. What are the initial concentrations used for tubes 3, 5, and 6? Show pertinent solutions. What are the dilutions of the last positive tube and first negative tube respectively? Show computation.Cadherin molecules are adhesion molecules found on the cell surface. These molecules are often clustered side-to-side to create a form of molecular Velcro that attaches one cell to another cell or to the extracellular matrix. In the following drawings, two cells are initially attached via such a Velcro. When one of the cells moves in either of three different ways (A to C), it is faced with a mechanical resistance from the cadherin interactions. The resistance against which type of movement do you think is the weakest? Two neighboring cells D. The cell moves away from its neighbor A. Two neighboring cells B. The cell moves away from its neighbor OC. The cell slides past its neighbor D. The cell rolls over its neighbor The cell slides past its neighbor C The cell rolls over its neighborCertain cellular components appear to move bidirectionally on microtubules. Describe how this is possible given that microtubule orientation is fixed by the MTOC.
- If you were given the task of determining the approximate % solute of potato cells. You decide to set up a series of 10 cups ranging from dH2O to 1% sucrose solution. You intend to drop a potato stick in each cup. a. What data would I need to collect for each potato stick? b. Why would I need to look for the solutions that have no effect on the potato stick?Given this, if you used 6g of vitamin Z powder to make 20 ml of solution, what is the % concentration of this solution? (I gave the image since I don't know if that info is needed to solve this question.)It also gives a follow-up, if you can help here too: You work in a lab as a summer student. One of your tasks is to make sure that there is enough cell culture medium containing antibiotics to grow bacteria. One day you realize that there is only 5 ml of 10% Antibiotic stock solution in the freezer. You decide to use it all to prepare the working culture medium with 0.01% antibiotic. In the lab there is plenty of growth medium without antibiotics. (Note: dilution in medium is like dilution in water). You remember the equation to make dilutions of stock solutions. You usually use this formula to calculate the required volume of a stock solution, but you realize it can apply here as well, even though the unknown is the final volume. So, you make that dilution. Given that each bacterial…You have two solutions that are isosmotic to each other and to a cell. However, when testing for tonicity, one of these solutions is hypotonic and one is isotonic. Briefly explain how this is possible.
- In this part of the assignment, assume you have carried out the microscopic examination of the effects of osmosis in plant cells experiment The image in Figure 4 is of Elodea canadensis leaf cells in isotonic solution (normal saline). The image in Figure 5 is of Elodea canadensis leaf cells in 10% sucrose solution. The image in Figure 6 is of Elodea canadensis leaf cells in distilled water. a. Determine cell size and vacuole size. b. Calculate the percentage change in vacuole size for each treatment compared to the control. Use the formula: Experimental Size - Control Size/Control Size c. Based on these results, explain the tonicity of each treatment using experimental results to support your answer as would appear in the discussion section of a formal report (maximum four (4) lines). d. Was the percentage change in vacuole size for the experimental conditions relative to the control of similar magnitude? If the change was not of the same magnitude, explain the difference in effect…You are studying the rate of actin polymerization and depolymerization in an in-vitro hypothetical system. The G actin concentration in the solution of the experimental setup is 0.3μm. Based on the data values predict the outcome of the experiment. Please note that X or Y ends can be "any end" of the actin filament. -1 X end actin: Association rate: 10 µmS-¹ ; Dissociation rate: 2.5 µmS-¹ Y end actin: Association rate: 5 µmS-¹ ; Dissociation rate: 2.5 µmS-¹ O The X end of the actin filament will grow. O Neither X or Y end of the filament will grow. O The Y end of the actin filament will grow. O There is not sufficient data to predict theFluorescence intensities depends on the molecular structure and its environment. Discuss the factors that can affect the fluorescence intensity and explain how the factors increase or decrease the intensity.
