Dissufsion

Question 1

Describe osmosis process

Answer 1

Water mover through selectively permeable barrier of lower to higher concentration until equilibrium is reached

Question 2

Difference between diffusion and facilitated diffusion

Answer 2

In simple diffusion, molecules move down the concentration gradient but in facilitated diffusion molecules move up the concentration gradient.

Question 3

Difference active and passive transport

Answer 3

Active-requires energy

Passive- doesn’t require energy

Question 4

Two major type of active transport and describe

Answer 4

Molecular transport- small molecules and ions are carried across membrane
That act like pumps

Bulk transport- large molecules and solid chunks of material transported by movements of the cell membrane into and out of the cell

Question 5

C) 2) What is endocytosis and expcrytosis

Answer 5

Endocytosis- taking material into cell by means of infolding or pockets of membrane

Expcrytosis- release large amounts of material

Question 6

What happens during diffusion

Answer 6

Particles move from an area of low concentration to high concentration