Question

Oxygen and carbon dioxide pass through the plasma membrane by _____.

passive diffusion
facilitated diffusion
active transport

Answer 1

oxygen and carbon dioxide are both gasses so they just float across the plasma membrane. This is called simple diffusion, or passive diffusion. The body doesn't have to work to get the gasses throught the membrane.

Answer 2

passive diffusion

Answer 3

passive diffusion
is it

Answer 4

no energy required in passive diffusion

Answer 5

thank u @asmagul and @thomaster