6.3

Question 1

What is facilitated diffusion?

Answer 1

a type of passive transport that uses specialized proteins, such as channel proteins and carrier proteins, to help molecules move across a cell membrane

Question 2

What is passive diffusion?

Answer 2

the process by which molecules diffuse from a region of higher concentration to a region of lower concentration

Question 3

What is osmosis?

Answer 3

the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane

Question 4

Define hypertonic

Answer 4

any external solution that has a high solute concentration and low water concentration compared to body fluids.

Question 5

Define hypotonic

Answer 5

something that has a lesser degree of tone, tension, or tonicity

Question 6

Define isotonic

Answer 6

any external solution that has the same solute concentration and water concentration compared to body fluids

Question 7

What is active transport

Answer 7

an energy-driven process where membrane proteins transport molecules across cells

Question 8

Define endocytosis

Answer 8

the process by which cells take in substances from outside of the cell by engulfing them in a vesicle

Question 9

Define exocytosis

Answer 9

the process by which cells move materials from within the cell into the extracellular fluid

Question 10

What way do molecules move in active transport?

Answer 10

from the lower concentration to the higher concentration

Question 11

What way do molecules move in facilitated diffusion, simple diffusion, osmosis?

Answer 11

from the higher concentration to the lower concentration

Question 12

Which way will water move?

Answer 12

water moves from the higher concentration to the lower concentration