Osmosis

Question 1

Define osmosis

Answer 1

The passage of water from a region where it has a higher water potential to a region where it has lower water potential through a selectively permeable membrane (allow water + other small molecules through but not larger ones)

Question 2

How can osmosis be quantified (measured)?

Answer 2

Using water potential

Question 3

In terms of water potential, how does water move?

Answer 3

Always moves from high to low water potential

Question 4

What is the water potential of 100% pure water?

Answer 4

100% pure water: 0

All solutions have a water potential lower than or equivalent to 0 + you can not get higher than 0

Question 5

What does the addition of solutes do to the water potential?

Answer 5

It reduces the water potential

Question 6

What does hypotonic mean?

Answer 6

There is a higher water potential inside the cell than outside of the cell

Question 7

Name another word used to describe a hypotonic cell

Answer 7

Turgid

Question 8

What does isotonic mean?

Answer 8

There is equal amount of water inside and outside of cell

Question 9

Name another word used to describe a hypertonic cell

Answer 9

Plasmolyzed

Question 10

What does hypertonic mean?

Answer 10

Low water potential inside cell (it shrivels)

Question 11

Give the word to describe no net movement of water in a cell

Answer 11

Isotonic

Question 12

What is lysis?

Answer 12

When the cell bursts when water enters the cell (hypotonic)

Question 13

What is crenation?

Answer 13

Cell shrivels (hypertonic)