diffusion

Question 1

what is simple diffusion?

does it require energy?

examples of what uses simple diffusion

Answer 1

the movement of particles from a high concentration to a low concentration

does not require energy

oxygen and water

Question 2

what is facilitated diffusion?

how does it occur?

Answer 2

the movement of particles from a low concentration to a high concentration- attaches to a carrier protein

through pores in cell membrane

Question 3

what is active transport?

does it require energy? if so what energy?

examples of what uses active transport

Answer 3

the movement of particles from a low concentration to a high concentration

it does require energy which is called Adenosine Triphosphate (ATP)

sodium

Question 4

what is passive transport?

does it require energy?

Answer 4

the movement of particles from a high concentration to a low concentration

it does not require energy

Question 5

define endocytosis

Answer 5

particles entering the cell

Question 6

define exocytosis

Answer 6

particles expelled from the cell