Movement of substances

Question 1

Diffusion

Answer 1

Movement of particles from an area of high to low concentration

Question 2

Concentration gradient

Answer 2

Difference in concentration. The higher the concentration gradient, the faster the diffusion

Question 3

Osmosis

Answer 3

Movement of water from an area of high to low water potential

Question 4

Turgid

Answer 4

When a cell is full of water and the cell membrane presses against the cell wall

Question 5

Flaccid

Answer 5

When a cell has lost water and has shrunk, with the cell membrane pulling away from the cell wall

Question 6

Active transport

Answer 6

Movement of substances from an area of high to low concentration using energy

Question 7

Active transport in the intestines

Answer 7

Sugars in the bloodstream are carried into the cells lining the intestine, using active transport

Question 8

Active transport in root hair cells

Answer 8

Plants use active transport to take in ions from the soil into the root hair cells for nutrition