Q6: Membrane Transport

Question 1

(T/F) Diffusion is the tendency to move molecules or ions from an area where they are in lower concentration to an area where they are higher in concentration.

Answer 1

false

Question 2

(T/F) The unassisted diffusion of lipid-soluble or very small particles is called simple diffusion.

Answer 2

true

Question 3

(T/F) Assisted diffusion is known as facilitated diffusion.

Answer 3

true

Question 4

solution that has the same concentrations of non-penetrating solutes as those found in the cells

Answer 4

isotonic solution

Question 5

solution that has a higher concentration of non-penetrating solutes than seen in the cell

Answer 5

hypertonic solution

Question 6

solution that has a lower concentration of non-penetrating solutes than found inside the cell

Answer 6

hypotonic solution

Question 7

the ability of a solution to change the shape or tone of cells by altering cells’ internal water volume

Answer 7

tonicity

Question 8

Certain molecules, like glucose and other sugars, some amino acids, and ions are transported passively even though they are unable to pass through the lipid bilayer. They accomplish this by moving through the membrane by a passive transport called ___ diffusion.

Answer 8

facilitated

Question 9

___ is the diffusion of a solvent, such as water, through a selectively permeable membrane.

Answer 9

Osmosis