Four small bags are filled with a 10% starch solution. The membrane of each bag contains microscopic pores large enough to let smaller water molecules cross but too small for the larger starch molecules to cross.Each bag is placed in a separate beaker as follows:Bag 1 is placed in distilled water containing no starch (0% starch).Bag 2 is placed in a solution of distilled water and 5% starch.Bag 3 is placed in a solution of distilled water and 10% starch.Bag 4 is placed in a solution of distilled water and 50% starch.The bags are weighed initially and at regular intervals for a specific period of time. Some bags saw a change in weight, and some did not. Answer the following questions based on the expected outcomes of this experiment.a. Which bag should weigh approximately the same at the
end of the experiment as it did at the beginning of the experiment?b. Which bag is expected to be the heaviest at the end of the experiment?c. Which bag is expected to be the lightest at the end of the experiment?
What will be an ideal response?
a. Bag 3; b. Bag 1; c. Bag 4
You might also like to view...
If you were presented with a tissue sample that contained long rows of cells surrounded by parallel
bundles of collagen and elastin fibers, that tissue would most likely be
a. bone tissue. b. fibrous connective tissue. c. cartilage. d. blood. e. adipose tissue.
Which of the following does not occur prior to or during stage 1 of labor?
A. uterine contractions B. effacement C. bloody show D. breaking water E. dislodging of the placenta
Invertebrates that feed on coarse particulate organic matter (CPOM), such as leaves that fall into streams and rivers, are referred to as
A) shredders. B) gougers. C) grazers. D) collectors.
A nurse tells you that your blood pressure is 112/70. The "70" refers to __________.
a. your heart rate b. the velocity of blood during diastole c. the diastolic pressure from the recoil of the arteries d. the systolic pressure from ventricular contraction e. the venous pressure caused by the compression of the blood pressure cuff