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# Problem set: water and solute movement across membranes - page 3 / 10

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Problem set: water and solute movement across membranes

b.

hyperosmotic to a 500 mOsM solution of glucose.

c.

isosmotic to a 500 mOsM solution of glucose.

d.

hyposmotic to a 300 mOsM solution of glucose.

e.

isosmotic to a 50 % solution of glucose.

15.

Under what conditions will movement of oxygen into oxygen-depleted cells be facilitated?

a.

with receptor specificity

b.

with increased plasma glucose levels

c.

with high oxygen levels outside the cells

d.

where the cell membrane has increased cholesterol levels

e.

where scar tissue on the cell surface reduces available surface area

16.

What is the largest fluid compartment in the body?

a.

plasma

b.

osmostitia

c.

interstitial fluid

d.

intracellular fluid

e.

the fluid portion of the blood

17.

A young person with a total body weight of 95 kg has an estimated…

a.

50 kg total body water with 20 kg inside cells, 30 kg outside cells

b.

60 kg total body water with 30 kg inside cells, 30 kg outside cells

c.

60 kg total body water with 40 kg inside cells, 20 kg outside cells

d.

90 kg total body water with 30 kg inside cells, 60 kg outside cells

e.

90 kg total body water with 60 kg inside cells, 30 kg outside cells

18.

A 0.9% NaCl solution is an isotonic solution for patient X. An example of a hypertonic solution for this patient would be…

a.

1.2 % NaCl with 0.5% glucose

b.

0.9% NaCl with 0.5% glucose

c.

0.8% NaCl

d.

0.8% NaCl with 0.5% glucose

e.

0.5% glucose

19.

You have, on average, a 90 mg/dl plasma glucose concentration. If you have 5 liters of plasma total in your body, how many grams of glucose total do you have in the plasma?

20.

An experiment is conducted to test the permeability characteristics of a dialysis membrane. The membrane is made into a sac, with different solutions placed inside and outside, as you did in lab.  Here are the results:  If the sac contains a 10% sucrose solution and is placed in a 20 % sucrose solution, it will crenate.  If the sac contains a 10% sucrose solution and is placed in water, it will  swell. If the sac contains a 10% CaCl2 solution and is placed in water, it will swell. If the sac contains a a 10 % Ca2+ solution, there will be no net change in its weight.  What are the permeability characteristics if this dialysis membrane, based on these results?

21.

Predict the change in size of a normal human cell placed in each of the following solutions by circling from the italicized choices:

a.

In 400 mOsM glucose, the cell will :crenate not changeswell

b.

In 5% NaCl, the cell will:crenate not changeswell

c.

In a hyperosmotic, isotonic solution:       crenate not changeswell

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