Section 7-3

Question 0

What are the functions of a cell membrane

Answer 0

1. Controls what enters and leave the cell
2. Communicate with other cells
3. Contains proteins that identifies itself
4. Serves as an attachment site for organelles and near by cells

Question 1

What is the cell membrane made up of?

Answer 1

Phospholipid bilayer and protein channels

Question 2

Describe the process of diffusion

Answer 2

Particles move from an area where they are more concentrated to an area where they are less concentrated does not require energy

Question 3

What is osmosis?

Answer 3

water moving from high to low

Diffusion of water through a selective permeable membrane

Question 4

Describe the process the process if facilitated diffusion

Answer 4

Diffusion of larger molecules and substances that are to large to pass directly through the cell membrane

Question 5

Difference between passive and active transport

Answer 5

Passive- doesn’t require energy to pass through the cell membrane
Active- requires energy to pass through the cell membrane