Many molecules are unable to pass through a semipermeable membrane. Identify and describe two mechanisms that may be employed to move these molecules across the membrane.

Question

wolfe8 · Answer

Hint: proteins on the surface of the cells

anonymous · Answer

Carrier proteins and transport proteins

wolfe8 · Answer

Correct. Now all you have to figure out are the mechanisms that involve carrier and transport proteins.

anonymous · Answer

Transport proteins are the hydrophilic channels which allows a pathway for ions to pass through the membrane since the rest of the part of the cell membrane is made up of phospolipids and other component which doesn't allow the movement of ions to occur. These transport protein controls what leaves and get in the cell

anonymous · Answer

lipids are what are on the outer and inside of the cell membrane and alow protines to enter????? well thats what i think

wolfe8 · Answer

I was asking the one asking to answer those questions. Remember on OpenStudy we give hints and help, not answers. Do refer to our CoC and TaC. http://openstudy.com/code-of-conduct http://openstudy.com/privacy-policy Also, these proteins are needed because of molecule size and concentration. As I said before, look up passive and active transportations.