Cell Biology 3 Osmosis & Active Transport

Question 1

What is osmosis?

Answer 1

Osmosis is the diffusion of water from a higher concentration solution of water (dilute) to a lower concentration of water solution through a partially permeable membrane.

Question 2

Does osmosis require energy? if so then from where?

Answer 2

Osmosis does not require energy.

Question 3

What is the name given to a cell that has shrunk?

Answer 3

Flaccid is when a cell has shrunk.

Question 4

What is the name given to a cell that has expanded and is swollen?

Answer 4

Turgid is when a cell has swollen and expanded.

Question 5

What is the difference between dilute solutions and concentrated solutions?

Answer 5

A dilute solution contains a high concentration of water whereas a concentrated solution contains a low concentration of water. (in osmosis water diffuses from a dilute solution to a concentrated solution, aka an area of high to an area of low)

Question 6

What is active transport?

Answer 6

Active transport moves particles from a lower concentration (more dilute) to a more concentrated solution (against the concentration gradient)

Question 7

Does active transport require energy? if so from where?

Answer 7

Active transport requires energy from respiration.