Answer:
D
Explanation:
polysaccharides is NOT one of the four main groups of macromolecules of living things
Sedimentary rocks are formed because of overburden pressure
A Pinocytic vesicle is a structure which helps in the Pinocytic process, where the small particles are bought into the cell, forming an infolding or invagination which in turn are suspended in the small vesicles. This process is also known as Cell Drinking.