2.1 exchange with the enviroment

Question 1

Diffusion

Answer 1

the movement of particles from regions of highers density to regions of lower density.

Question 2

Osmosis

Answer 2

the diffusion water through a semipermeable membrane.

Question 3

Passive transport

Answer 3

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

Question 4

Active transport

Answer 4

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

Question 5

Endocytosis

Answer 5

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

Question 6

Exocytosis

Answer 6

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

Question 7

Molescules

Answer 7

particles that made up the water.

Question 8

Semipermeable

Answer 8

only certain substances can pass through.

Question 9

Channels

Answer 9

the cell membrane through passageways.