Final answer:
Phagocytosis and receptor-mediated endocytosis are similar in that both engulf materials into the cell and form internal vesicles, but they differ in selectivity and the types of targets they internalize; phagocytosis is less specific and for larger particles, while receptor-mediated endocytosis is highly specific to molecules with corresponding receptors.
Step-by-step explanation:
Phagocytosis and receptor-mediated endocytosis are both forms of endocytosis, a process where cells internalize substances from their external environment. Similarities between these two processes include: (1) both involve the cell membrane engulfing materials to bring them into the cell, and (2) both result in the formation of an internal vesicle or vacuole. Differences include: (1) phagocytosis typically targets larger particles such as debris or microorganisms and is less selective, whereas receptor-mediated endocytosis is highly selective and targets specific molecules that bind to receptors on the cell surface; (2) phagocytosis involves the cell membrane wrapping around the target and forming a vacuole, whereas receptor-mediated endocytosis involves the formation of a coated pit that pinches off to become a coated vesicle within the cytoplasm.