Cell Transport

Question 0

What is facilitated diffusion?

Answer 0

Diffusion through special protein channels

Question 1

What is passive transport?

Answer 1

Movement of materials across the cell membrane without using cellular energy

Question 2

What is osmosis?

Answer 2

Diffusion of water through a selectively permeable membrane

Question 3

What is an isotonic solution?

Answer 3

both solutions have equal concentrations of solutes

Question 4

What are the functions of the cell membrane?

Answer 4

protect the cell, control incoming and outgoing substances, maintain ion concentrations of various substances, allows some molecules in and others out

Question 4

What is a selectively permeable membrane?

Answer 4

a membrane that allows some molecule in and keeps others out

Question 5

What are the four basic mechanisms of transport through cell membranes?

Answer 5

1. Diffusion and Facilitated Diffusion
2. Osmosis
3. Active Transport
4. Endocytosis and Exocytosis

Question 6

What is diffusion?

Answer 6

the movement of molecules (or ions) from a region of high concentration to a lower concentration

Question 7

Molecules move about randomly because of what?

Answer 7

kinetic energy

Question 8

When do molecules reach equilibrium?

Answer 8

when hey are evenly spread out

Question 9

What is an hypotonic solution?

Answer 9

solution with the lesser concentration of solutes

Question 10

What is a hypertonic solution?

Answer 10

solution with higher concentration of solutes

Question 11

What is active transport?

Answer 11

transport of a molecule in or out of cell that requires energy