Lesson 4

Question 1

it is the movemnt of molecules within biolgical materials or solutions driven by concentration gradient

Answer 1

diffusion in biological solutions

Question 2

importance of diffusion in biological solution

Answer 2

1. food processing
2. fermentation

Question 3

three equations that can be used to solve for the diffusion coefficient in biological solutions

Answer 3

1. wilke-chang correlation
2. stokes-einstein equation
3. modified polson equation

Question 4

it is considered a semisolid porous materials

Answer 4

gels

Question 5

three examples of gels

Answer 5

1. agarose
2. agar
3. gelatin

Question 6

the pores or open spaces in the gel structure are filed with?

Answer 6

water

Question 7

this material follows Fick’s Law

Answer 7

gels

Question 9

rate of diffusion of small solutes in gels are ________ in aqeuous solution

Answer 9

less than