Refer to Figure 7.3 to answer the following questions.
The solutions in the arms of a U-tube are separated at the bottom of the tube by a selectively permeable membrane. The membrane is permeable to sodium chloride but not to glucose. Side A is filled with a solution of 0.4 M glucose and 0.5 M sodium chloride (NaCl., and side B is filled with a solution containing 0.8 M glucose and 0.4 M sodium chloride. Initially, the volume in both arms is the same.
43. At the beginning of the experiment,
A. side A is hypertonic to side B.
B. side A is hypotonic to side B.
C. side A is isotonic to side B.
D. side A is hypertonic to side B with respect to glucose.
E. side A is hypotonic to side B with respect to sodium chloride.
44. If you examine side A after 3 days, you should find
A. a decrease in the concentration of NaCl and glucose and an increase in the water level.
B. a decrease in the concentration of NaCl, an increase in water level, and no change in the concentration of glucose.
C. no net change in the system.
D. a decrease in the concentration of NaCl and a decrease in the water level.
E. no change in the concentration of NaCl and glucose and an increase in the water level.
45. Which of the following statements correctly describes the normal tonicity conditions for typical plant and animal cells?
A. The animal cell is in a hypotonic solution, and the plant cell is in an isotonic solution.
B. The animal cell is in an isotonic solution, and the plant cell is in a hypertonic solution.
C. The animal cell is in a hypertonic solution, and the plant cell is in an isotonic solution.
D. The animal cell is in an isotonic solution, and the plant cell is in a hypotonic solution.
E. The animal cell is in a hypertonic solution, and the plant cell is in a hypotonic solution.
Read the following information and refer to Figure 7.4 to answer the following questions.
Five dialysis bags, constructed from a semi-permeable membrane that is impermeable to sucrose, were filled with various concentrations of sucrose and then placed in separate beakers containing an initial concentration of 0.6 M sucrose solution. At 10-minute intervals, the bags were massed (weighed. and the percent change in mass of each bag was graphed.
46. Which line represents the bag that contained a solution isotonic to the 0.6 molar solution at the beginning of the experiment?
47. Which line represents the bag with the highest initial concentration of sucrose?
48. Which line or lines represent(s. bags that contain a solution that is hypertonic at the end of 60 minutes?
A. A and B
E. D and E
49. You are working on a team that is designing a new drug. In order for this drug to work, it must enter the cytoplasm of specific target cells. Which of the following would be a factor that determines whether the molecule enters the cell?
A. blood or tissue type of the patient
B. non-polarity of the drug molecule
C. lack of charge on the drug molecule
D. similarity of the drug molecule to other molecules transported by the target cells
E. lipid composition of the target cells’ plasma membrane
50. In which of the following would there be the greatest need for osmoregulation?
A. an animal connective tissue cell bathed in isotonic body fluid
B. a terrestrial animal such as a snake
C. a red blood cell surrounded by plasma
D. a lymphocyte before it has been taken back into lymph fluid
E. a plant being grown hydroponically (in a watery mixture of designated nutrients.
51. When a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur?
A. the cell will burst
B. the cell membrane will lyse
C. plasmolysis will shrink the interior
D. the cell will become flaccid
E. the cell will become turgid
52. Which of the following membrane activities require energy from ATP hydrolysis?
A. facilitated diffusion.
B. movement of water into a cell
C. Na+ ions moving out of the cell
D. movement of glucose molecules
E. movement of water into a paramecium
GraduateWriterHelp.com is an online academic writing platform that provides extensive assistance to graduate school students as they work through their research projects, papers and dissertations. GraduateWriterHelp.com gives students access to experienced professionals who can provide the help they need in a timely and efficient manner. The service offers a wide range of services, including editing, proofreading, formatting, researching and more that can give students the confidence they need to write the perfect paper or dissertation for their chosen subject matter.
Services Offered by GraduateWriterHelp.com
GraduateWriterHelp.com offers a wealth of different services designed to make research projects easier for graduate school students. These include editing, proofreading, formatting and researching services, all tailored specifically for graduate-level studies such as PhDs or Master’s degrees in any field from business administration to engineering or even psychology – all with the aim of helping busy students find success in their academics without having to sacrifice other important commitments like family time or work hours towards earning a living wage outside of college hours.
The Benefits of Using GraduateWriterHelp.com
Using GraduateWriterHelp.com gives you access to experts from all over the world who are highly qualified and experienced in helping graduate-level students to complete successful projects in various fields quickly and efficiently – something that would otherwise be difficult, if not impossible, given tight deadlines associated with most Ph.D./Master’s degree programs today. Moreover, using this platform makes it easier for students to keep up with multiple research tasks simultaneously since there are so many different experts available on tap at any one time – no longer will you have to put off studying one topic while focusing on another because of lack of resources! Additionally, having access to professional editors, proofreaders, but also formatters means that quality control standards aren’t sacrificed when finishing major pieces – since these individuals understand what makes up good academic writing better than anyone else and can offer guidance on how best one should go about making improvements along those lines. Finally, there is also an added cost-saving benefit associated with utilizing Graduate Writer Help compared to hiring an independent contractor (which could potentially run into thousands depending on length/complexity).
This service allows users only pay for what students need, which tends to be much lower overall because customers pay per hour rather than project basis, thus resulting to greater financial flexibility, especially for those just starting out postgraduate studies looking to conserve some pennies here there whenever possible!
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more