When creating an artificial cell using a dialysis bag, how would you predict how the artificial cell will adjust to its immediate environment? Will it gain volume (hypotonoic), lose volume (hypertonic) or maintain the same volume (isotonic)?

Two solutions are separated by a semipermeable membrane that is permeable only to water.  The two solutions are: Solution A = 150 mM KCl Solution B = 150 mM Angiotensin (a 7 amino acid polypeptide) Which of the following would best explain the net movement in this situation? - water will move from the KCl side to Angiotensin side - water will move from Angiotensin side to KCl side - The Cl- ion will move to the angiotensin side until there is 75 mM Cl- on each side - Since Angiotensin is not an ion, it can move through the membrane - There is no net water movement as the concentrations are the same on both sides

which of the following is a hypertonic solution (relative to body fluids)? Note: this can occur during a state of dehydration- 500mOsm, 100mOsm, or 300mOsm.

In this experiment 4 dialysis tubes filled with unknown starch concentrations were placed into beakers with 10% starch solutions. The bags were weighed every 10 minutes for an hour to measure osmosis. Use the figure to answer the following questions. Which bag(s) was(were) in a hypertonic environment? Select any that apply.  Question options:   Bag 1   Bag 2   Bag 3   Bag 4

Various chemical methods can be used to permeabilize or lyse cells including the use of enzymes. List three important factors to consider when developing a lysis method using enzymes.   Estimate the osmotic pressure drop across the membrane of an animal cell in a 0.10 M NaCl solution, assuming that the internal total solute concentration is 0.36 osM and temperature is 30.0°C. Do you think that this pressure drop would lyse cells? Why or why not?

Cells are small because volume increases at a faster rate than surface area. True False