Transport In Cells

Question 1

Describe diffusion and active transport and osmosis

Answer 1

Diffusion - is the movement of particles from an area of higher concentration to area of lower concentration, does not require energy

Active transport - movement of particles from an area of lower concentration to area of higher concentration, and requires energy

Osmosis - water particles move through a partially permeable membrane from an area of higher concentration to area of lower concentration, does not require energy

Question 2

Describe what happens when plant and animal cells are placed in solutions of high water concentration and low water concentration.

Answer 2

High water concentration (hypotonic solution)
Plant cell - water enter though osmosis causing them to swell and become turgid
Animal cell - absorbs water causing them to swell, and they may burst

Low water concentration (hypertonic solution)
Plant cell - water moves out the cell causing it to shrink and become flaccid
Animal cell - water moves out of the cell causing it to shrink and shrivels