Unit 1- Cell Transport

Question 0

What is diffusion?

Answer 0

Diffusion is the movement of molecules from high concentration to low concentration across a selectively permeable membrane

Question 1

Describe the cell membrane?

Answer 1

The cell membrane is made up of phospholipids and proteins and is selectively permeable.

Question 2

What is osmosis?

Answer 2

Movement of water molecules from high water concentration to low water concentration across a selectively permeable membrane

Question 3

What type or processes are diffusion and osmosis?

Answer 3

Passive processes, meaning they require no energy

Question 4

What happens when a red blood cell is put in hypotonic solution?

Answer 4

Haemolyisis(it bursts)

Question 5

What happens when a plant cell is put in hypertonic solution?

Answer 5

Cell becomes plasmolysed and tissue becomes flaccid

Question 6

What is active transport?

Answer 6

Movement of molecules from low concentration to high concentration