The major route for endocytosis in most cells, and the best-understood, is that mediated by the molecule clathrin. This large protein assists in the formation of a coated pit on the inner surface of the plasma membrane of the cell.This pit then buds into the cell to form a coated vesicle in the cytoplasm of the cell.he major route for endocytosis in most cells, and the best-understood, is that mediated by the molecule clathrin. This large protein assists in the formation of a coated pit on the inner surface of the plasma membrane of the cell.
Sponges are extremely primitive invertebrate life so are classed under the Kingdom Animalia, they do not photosynthesise so are not plants. They are also very different to fungi and have an entirely different composition and life cycle. A sponge if passed through a sieve gradually reforms its original shape.ponges are extremely primitive invertebrate life so are classed under the Kingdom Animalia, they do not photosynthesise so are not plants. They are also very different to fungi and have an entirely different composition and life cycle. A sponge if passed through a sieve gradually reforms its original shape.
Fungi as a group have special external enzymes they use to decompose things. A good deal of bacteria do decompose, but many are primary producers. (Such as cyanobacteria. b. Yes, all bacteria are single-celled, but saying 'most' fungi are not is kind of weird.ungi are decomposers, but bacteria are not. b. Bacteria are single-celled organisms, but most fungi are not. c. Only fungi have cell walls, but bacteria do not. d. Fungus only grow in moist locations, bacteria do not.