Question

Which statement best describes how channel and carrier proteins in the plasma membrane are similar?

Both directly connect the membrane to the nucleus of a cell.

Both cause the phospholipid bilayer to form a rigid membrane for a cell.

Both use energy to continuously move water molecules out of a cell.

Both allow for the flow of molecules into and out of the cell.

Answer 1

Both allow for the flow of molecules into and out of the cell.

Step-by-step explanation:

Answer 2

Both allow for the flow of molecules into and out of the cell

Step-by-step explanation:

The difference, however, between the two is that channels proteins can be open on both ends allowing molecules and ions in and out of the cell. However, carrier proteins can only be open on one end at a time. They have an active site that allows only a particular type of substances through.