Membrane Transport Exam

Question 1

Osmosis

Answer 1

The diffusion of water across a partially permeable membrane

Question 2

Partially permeable

Answer 2

Means that the membrane only allows certain substances to cross it

Question 3

Active transport

Answer 3

Transport of molecules in/out if cells via proteins in the plasma membrane

Question 4

Passive transport

Answer 4

Transport of molecules across the plasma membrane that does NOT require energy

Question 5

Facilitated diffusion

Answer 5

Passive transport of a polar molecule (e.g. Water soluble molecule) in/out of a cell through transport proteins found in the plasma membrane. E.g. Amino acids, sugars, ions

Question 6

Exocytosis

Answer 6

Bulk transport of large molecules or particles OUT of the cell

Question 7

Endocytosis

Answer 7

Bulk transport of large molecules or particles INTO the cell

Question 8

Pinocytosis

Answer 8

Endocytosis of FLUIDS into cells

Question 9

Phagocytosis

Answer 9

Endocytosis of SOLIDS into cells

Question 10

Diffusion

Answer 10

The gradual movement of particles from and area of high concentration to an area of low concentration