Final answer:
The major difference between phagocytosis and pinocytosis is b) pinocytosis brings in solutes or fluids will phagocytosis brings in large particles
Step-by-step explanation:
The major differences between phagocytosis and pinocytosis hin/ge on the size and type of substances they transport into cells. Phagocytosis ('cell eating') is the process by which cells ingest large particles, such as macromolecules, parts of cells, or whole cells, which may include invading pathogens. Immune cells, like macrophages, commonly perform phagocytosis to patrol body tissues and remove unwanted matters by engulfing and digesting them.
In contrast, pinocytosis ('cell drinking') deals with the transportation of fluids and solutes. Through pinocytosis, cells non-specifically engulf extracellular fluid containing dissolved substances. Unlike phagocytosis, pinocytosis involves the formation of smaller vesicles that do not typically need to merge with a lysosome.
Therefore, the correct answer to the student's question is B: 'pinocytosis brings in solutes or fluids while phagocytosis brings in large particles.'