Unit 4- Gas Exchange

Question 1

(Simple) diffusion

Answer 1

Auto net movement of particles from high concentration to low concentration

Question 2

Active transport

Answer 2

Transport with energy in form of ATP

Question 3

Pressure potential

Answer 3

Inward pressure from plant cell wall onto protoplasm

Question 4

Plasmolysis

Answer 4

When the protoplasm shrinks away from cell wall and towards nucleus bc of losing so much water

Question 5

Endocytosis

Answer 5

Way of cells of getting large molecules into cell via vesicles

Question 7

Osmosis

Answer 7

Net movement of water/solution from high to low concentration

Question 8

Facilitated diffusion

Answer 8

Diffusion of molecules like water/glucose through channel/ carrier proteins

Question 8

Pinocytosis

Answer 8

Cell drinking

Form of endocytosis

Question 9

Isotonic solution

Answer 9

Inside and outside the cell have = osmotic concentrations

Question 10

Passive transport

Answer 10

Transport down concentration/pressure or electrochem. involving no energy

Question 11

Hypotonic solution

Answer 11

Higher osmotic concentration outside

Question 12

Exocytosis

Answer 12

Way of getting large molecules out of cell via vesicles

Question 13

Tugor(pressure)

Answer 13

Normal, rigid state of plant cell

Presses on cell wall as vacuole expands

Question 14

Incipient plasmolysis

Answer 14

When the protoplasm starts to come away from cell wall bc of losing water

Question 15

Hypotonic solution

Answer 15

Higher osmotic concentration inside than outside

Question 16

Water potential

Answer 16

Measure of waters potential to move out via osmosis
Water potential for pure water always equal zero
Anything else has a negative value