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Question 01

If a sample of red blood cells were placed in a solution of 18g l^-1 of urea (M_r 60.1) would they:

a) Swell and burst.

b) Stay the same size.

c) Shrink by 20%.

d) Swell slightly.

Question 02

If a sample of red blood cells were placed in a solution of 9 g l^-1 of NaCl (Mr 58.4) would they:

a) Swell by 10%.

b) Shrink by 10%.

c) Stay the same size.

d) Swell and burst.

Question 03

There are approximately 6.15 g of NaCl per liter of plasma, what is the osmolality contributed by the NaCl?

a) 105 mOsmol l^-1

b) 210 mOsmol l^-1

c) 300 mOsmol l^-1

d) 150 mOsmol l^-1

Question 04

Calculate the osmolarity (in mOsmoles per liter) of a solution of 45 g of albumin in a liter of water (Mr of albumin 69,000).

a) 6.5 mOsmol l^-1

b) 0.05 mOsmol l^-1

c) 0.65 Osmol l^-1

d) 0.65 mOsmol l^-1

Question 05

What is the osmotic pressure (in kPa) of a solution containing 50 g of albumin in a liter of water at body temperature (310 K)? (Hint: RT = 2577 J mole^-1 and 1 liter = 0.001 m³)?

a) 101 kPa

b) 1.9 kPa

c) 19 kPa

d) 5.3 kPa

Oxford University Press, Online Resource Centre, Chapter 02.

Chapter 02

Instructions

Question 01

Question 02

Question 03

Question 04

Question 05