WHAT TYPE OF TRANSPORT IS USED TO ENTER THE MEMBRANE

what type of transport do the following use to enter a cellular membrane?

is it diffusion, osmosis, facilitated diffusion, active/passive transport....???

1.) chloride and sodium
2.) carbon dioxide
3.) urea

I think #1 might be active transport ..not sure please describe and chose from the transport choices above thank you!!

Chloride and sodium - active trnsport

carbon dioxide - simple diffusion

urea - simple diffusion

Yes 1 is active, It get PUMPED in via pump proteins, 2 is simple diffusion because its small, not sure about 3 sorry :(