Osmosis

Question 1

Define osmosis

Answer 1

• movement of water from low solute to high solute concentration

Question 2

what are osmolytes?

Answer 2

• osmotically active molecules that affect osmosis (IONS or ORGANIC MOLECULES)

Question 3

The skin/surface of fish are selectively permeable. What does this mean?

Answer 3

• allows for movement of water but not solute

Question 4

Define osmotic pressure

Answer 4

• pressure needed to prevent flow of water by osmosis (expresses concentration of solutions proportional to [solute]

Question 5

What occurs in hypertonic solutions?

Answer 5

• higher conc. in solution than cell = shrink

Question 6

What occurs in hypotonic solutions?

Answer 6

• lower conc. in solution than cell = swell

Question 7

What occurs in isotonic solutions?

Answer 7

• equal conc. of ions in solution and cell = okay