Diffusion:

Question 1

what do all of the particles have?

Answer 1

= kinetic energy
= colliding with eachother

Question 2

What is diffusion?

Answer 2

= the net movement of particles from a region of high concentration to an region of low concentration
= DOWN the concentration gradient

Question 3

What happen if the concentration is the same both sides?

Answer 3

= equilberian
= no net movement of particles
= diffusion stopped

Question 4

What does it mean by diffusion is passive?

Answer 4

= does not require any metabolic energy
to take place
= uses kinetic energy

Question 5

Why is the cell membrane described as partially permable?

Answer 5

= some chemicals can easily diffuse
= other chemicals cannot

Question 6

What factors affect the rate of concentration?

Answer 6

= concentration gradient
= particle charge/ size
= temperature
= surface area
= distance
= pressence of chanell proteins and carrier proteins

Question 7

How does the concentration gradient affect the rate of concentration?

Answer 7

= increases the greater the concentration gradient

Question 8

How does the particle charge/size affect diffusion?

Answer 8

= charged particles cannot diffuse across the cell membrane
= water is an exception- small
= uncharged molecules can diffuse rapidly
= smaller particles diffuse faster than larger

Question 9

How does the temperature affect diffusion?

Answer 9

= increased temperature- particles have more ke and diffuse faster

Question 10

How does surface area affect diffusion?

Answer 10

= increase surface area- increases diffusion compared to smaller

Question 11

How does the distance that diffusion takes place over affect diffusion?

Answer 11

= greater distance- slower rate
= smaller distance- faster rate