Materials are able to move across a cell membrane through one of two methods: active transport or passive transport. what is the difference between active transport and passive transport?
a
active transport requires the cell to form vesicles, while passive transport requires the use of membrane pumps.
b
passive transport is the only form of transport that requires the use of proteins.
c
active transport is the only form of transport that requires the use of proteins.
d
active transport requires the cell to expend energy, while passive transport does not.