Students conducted a practical investigation where they set up two beakers, each with suspended piecesof diałysis tubing inside.Their experiment setup is shown below.DialysisTubingBeaker 1Beaker 2Both beakers were filled with distilled water. Thế dialysis tubing in beaker 1 container a sugar solution,while the dialysis tubing in Beaker 2 contained distilled water.(a) Write an appropriate aim for the students' experiment.(b) What is the purpose of beaker 2 in this experiment?(c) After 24 hours the students described that the tubing in beaker 1 had expanded, while the tubing inbeaker 2 had remained the same.Explain these results.(d) Name a risk in this experiment and explain how you would overcome it.

Dialysis : It is a procedure to remove waste products and excess fluid from the blood when the…

Answered: Writé án appropriate aim for the…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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For the juice samples in exercise 3-4, you will be using the pour plate technique. In this exercise, you will add juice to a petri dish and pour agar over the sample and mix. Why is the media (potato dextrose agar, PDA) kept in a water bath until you are ready to use it, and why must you work fairly quickly? (One response answers both questions). The media is already solid and will form chunks The media has a dye added to it that must be kept at 45°C until ready to use O PDA is a media that allows growth of many types of fungi, and the heat from the water bath keeps the fungal spores from growing. The media is kept liquid in the water bath with heat, removing the tube from the heat source will cause the PDA to solidify
Porous dialysis tubing is used to create a "model cell" containing glucose and albumin, a protein. This "cell" is placed into a beaker containing water and Biuret reagent. Initially the "cell" is colorless and the beaker is light blue. At the end of the experiment, the "cell" is light purple and the beaker is still light blue. What accounts for the color change observed? O Biuret reagent entered the cell and reacted with protein. Glucose exited the cell and reacted with Biuret reagent. Biuret reagent entered the cell and reacted with glucose. O Protein exited the cell and reacted with Biuret reagent.
Indicate whether you think that the number of cfu/ ml calculated would be too high or too low if you make this mistake. 1.You intend to add 9ml of broth (water) to each tube and 1 ml of culture. Instead, you add 5 ml of broth to each tube and 5 ml of culture to the first tube. Then, you make a serial dilution of 1 ml into and from each tube as described. 2. You prepare 9 ml of broth (water) in each tube. You add 1ml of culture of every tube. 3.You add 9 ml of broth (water) to each tube. You add 1 ml of culture to the first tube and mix. You get distracted, and transfer 1ml of the dilutant (mixture of culture and broth) to the third tube instead of the second. You perform the rest of the series as described.
Based on information provided, could you please answer only question B? (Please show your work) Na2S203 Flask 1 Flask 2 Flask 3 Initial 14.15 28.04 Final 27.07 43.85 31.06 49.87 KBr03 Flask 1 Flask 2 Flask 3 Initial 40 35.20 41.2 Final 60 45.22 51.2 Concentration of Na2S203: 0.0898M Concentration of KBr03: 0.020M Concentration of NH3OhHCI: 0.02M Calculations a) For each of the three sets of data calculate the number of moles of KBr03 initially delivered into each flask, considering the volume of KBr03 delivered and its concentration. From the result of the titration of unreacted KBr03 with Na2S203, find the number of moles of KBr03 remaining in the solution at the end of the 10-minute reaction period. The difference between these two values gives the number of moles of KBr03 which reacted with the hydroxylammonium ion. Calculate the average of the three values for the moles of KBr03 which reacted. b) Find the number of moles of electrons which must have been transferred between Br03-…
The graph is of initial velocity versus substrate concentration. Estimate Vmax from the direct graph of v versus [S] using the plot. Estimate KM from the direct graph of v versus [S] using the plot, also.
How much sample should be injected into the GC? 1) 0.5 microliter O 2) 15 microliter 3)5microliter O 4) 5 militers
When loading samples onto a gel, why should expelling all the liquid in the tip be avoided? a)All the sample could be forced out from the well in which it was loaded. b)The extra liquid would end up in the buffer and this would distort the migration of the sample. c)The gel could tear and distort the migration of the sample. d)An air bubble could result which would distort the migration of the sample .
Jordan is working with an 60% stock concentration of Windex. She decides to add 100 μL of bacteria to atube containing 3 mL of nutrient broth and then adds 1000μL of the Windex stock to the tube as well.What is the unknown concentration of the tube?
Using the data in the picture below, answer the five questions in the pictures.
If you transferred 15 mL of an undiluted sample into 35 mL of diluting fluid, what dilution have you created? (Note: provide your answer in decimal format to three decimal places.)
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Writé án appropriate aim for the students' experiment. p) What is the purpose of beaker 2 in this experiment? ) After 24 hours the students described that the tubing in beaker 1 had expanded, while the tubing in beaker 2 had remained the same.