2.1

Question 1

The movement of particles from regions of higher density to lower density to regions of lower density

Answer 1

Diffusion

Question 2

The diffusion of water through a semipermeable membrane

Answer 2

Osmosis

Question 3

Particles that help make up water

Answer 3

Molecules

Question 4

Only certain substances can pass through

Answer 4

Semipermable

Question 5

Small particles pass the cell membrane through passageways called

Answer 5

Channels

Question 6

The movement of substances across a cell membrane without the use of energy by the cell.

Answer 6

Passive Transport

Question 7

The movement of substances across the cell membrane that requires the cell to use energy

Answer 7

Active Transport

Question 8

The process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particles into the cell

Answer 8

Endocytosis

Question 9

The process in which a cell releases a particle by enclosing the particle in a vesicle that then moves to the cell surface and fuses with the cell membrane

Answer 9

Exocytosis