Plasma Membrane

Question 0

Plasmolysis

Answer 0

contraction of the protoplast of a plant cell as a result of loss of water from the cell.

Question 1

Cytolysis

Answer 1

the dissolution or disruption of cells.

Question 2

Turgor Pressure

Answer 2

The pressure exerted by water inside the cell against the cell wall.

Question 3

Osmosis

Answer 3

Diffusion of a solvent through a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.

Question 4

Pinocytosis

Answer 4

the ingestion of liquid into a cell by the budding of small vesicles from the cell membrane.

Question 5

Endocytosis

Answer 5

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

Question 6

Exocytosis

Answer 6

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.

Question 7

Carrier Protein

Answer 7

A protein that transports specific substance through intracellular compartments, into the extracellular fluid, or across the cell membrane.

Question 8

Passive Transport

Answer 8

transport of a substance across a cell membrane by diffusion; expenditure of energy is not required

Question 9

Diffusion

Answer 9

the spreading of something more widely.

Question 10

Facilitated Diffusion

Answer 10

Transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by means of a carrier molecule.

Question 11

Ion channel

Answer 11

A single protein or protein complex that traverses the lipid bilayer of cell membrane and form a channel to facilitate the movement of ions through the membrane.

Question 12

Concentration Gradient

Answer 12

a gradient in concentration of a solute as a function of distance through a solution.

Question 13

Hypertonic

Answer 13

having increased pressure or tone, in particular.

Question 14

Hypotonic

Answer 14

having increased pressure or tone, in particular.

Question 15

Equilibrium

Answer 15

a state in which opposing forces or influences are balanced.

Question 16

Isotonic

Answer 16

denoting or relating to a solution having the same osmotic pressure as some other solution, esp. one in a cell or a body fluid.

Question 17

Contractile vacuole

Answer 17

A vacuole in some protozoans that expels excess liquid on contraction.

Question 18

Phagocyte

Answer 18

A type of cell within the body capable of engulfing and absorbing bacteria and other small cells and particles.

Question 19

Active Transport

Answer 19

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

Question 20

Vesicle

Answer 20

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

Question 21

Phagocytosis

Answer 21

the ingestion of bacteria or other material by phagocytes and ameboid protozoans.

Question 22

Sodium Potassium pump

Answer 22

mechanism of active transport that moves potassium ions into and sodium ions out of a cell.