Which statement about the connection between subcellular and extracellular components is the most correct? A. Gap junctions are necessary for communication and growing embryos and tissues, such as heart muscle. B. Desmosomes are necessary for communication and tissues, such as muscle cells. C. Tight junctions are bound together by specific keratin proteins. D. Plasmadesmata are typically found interspersed within the cell walls of many types of bacteria.