Diffusion, Osmosis, Active Transport

Question 1

What is the definition of diffusion?

Answer 1

The net movement of particles from an area of high concentration to low concentration

Question 2

What does diffusion transport?

Answer 2

Gases + liquids

Question 3

What is the definition of osmosis?

Answer 3

The net movement of water molecules across a partially permeable membrane from high water concentration to low water concentration.

Question 4

What is the definition of active transport?

Answer 4

Movement of molecules across a cell membrane from a low concentration to a high concentration. Requiring energy from cellular respiration

Question 5

How are root hair cells adapted for active transport?

Answer 5

• large surface area
• lots of mitochondria to provide energy
• thin walls

Question 6

How does active transport gain energy?

Answer 6

From cellular respiration (mitochondria)

Question 7

What is the main difference between diffusion and osmosis to active transport?

Answer 7

Diffusion and osmosis are passive processes as they go with the concentration gradient, unlike active transport which goes against concentration gradient