Some plant cells take advantage of the high concentration of protons outside the cell to move solutes, such as sucrose, across the plasma membrane into the cell where the sucrose concentration is already relatively high. this type of transport is an example of:

This type of transport is an example of secondary active transport

Secondary active transport is a form of active transport in which there is movement of an ion with another molecule across a transport membrane. This form of transport use the energy stored in the electrochemical gradient of an ion to drive the movement of another solute such as sucrose against a concentration.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

the answer is "a.) well–developed vascular system."

explanation: