Passive transport takes place along the concentration gradient without the use of metabolic energy while active transport takes place against the concentration gradient by using metabolic energy.

GLUT is the glucose transporters; a carrier protein mediates the movement of glucose. GLUT-2 works on liver while GLUT-1 on erythrocyte, GLUT-3 on the brain, and GLUT-5 on the small intestine.

Aquaporins are the water channels in the plasma membrane of the plants and animals which allow water and other small uncharged molecules to cross the membrane.

V-ATPase is found in vacuolar membranes and is used to transport proton against a concentration gradient. These pumps maintain low pH by pumping protons from cytosolic face to exoplasmic face of the membrane.

All of the above options are the types of endocytosis, which is a process of engulfing macromolecules in the plasma membrane. Pinocytosis is fluid-phase endocytosis which is also known as cell drinking, ingestion of fluid and solutes in the form of small vesicles.