9.19 Membrane Properties - Passive Transport Flashcards Preview

Foundations Exam 3 > 9.19 Membrane Properties - Passive Transport > Flashcards

Flashcards in 9.19 Membrane Properties - Passive Transport Deck (10):
1

what are the three factors influencing diffusive flux of a non-electryolite molecule into the cell?

1. concentration gradient
2 time/distance
3. lipophilicity/size

2

in general, lipophilic molecules can more easily ________ in the plasma membrane and can cross more _______

partition
cross

3

what is Fick's First Law?

J = D*change in [C]/[x]

4

rate of proportion is directly proportional to ___________

concentration gradient

5

net flow of water across a semipermeable membrane in response to a gradient in the chemical activity of water

osmosis

6

osmotic pressure

The osmotic pressure of solution A is the value of the hydrostatic pressure that must be applied to that solution to stop the net flux of water into the solution.

7

the greater the number of osmotically active solutes, the ________ the hydrostatic pressure

higher

8

0.1 M solution is _____ osmolar

0.1

9

0.1 M NaCl solution would be ____ osmolar.

0.2

10

the tendency of a molecule to partition in lipid:

lipophilicity