2.1 Exchange with the Environment

Question 1

the spreading of something more widely.

Answer 1

Diffusion

Question 2

he process of gradual or unconscious assimilation of ideas, knowledge, etc.

Answer 2

Osmosis

Question 3

allowing certain substances to pass through it but not others, especially allowing the passage of a solvent but not of certain solutes.

Answer 3

Semiperimeable

Question 4

small particles, such as sugar, cross the cell membrane trough passageways

Answer 4

Channels

Question 5

is a movement of ions and other atomic or molecular substances across cell membranes without need of energy input.

Answer 5

Passivetransport

Question 6

the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

Answer 6

Activetransport

Question 7

the taking in of matter by a living cell by origination of its membrane to form a vacuole.

Answer 7

Endocytosis

Question 8

a fluid- or air-filled cavity or sac, in particular.

Answer 8

Vesicles

Question 9

a process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.

Answer 9

Exocytosis