Final answer:
Macrophages are the cells used to examine bacterial uptake in the lab, which use lysosomes in their phagocytic activity to digest pathogens.
Step-by-step explanation:
The type of cells used to examine the uptake of bacteria in the lab today are macrophages. Macrophages are known for their ability to phagocytize pathogens, including bacteria, and they play a significant role in the innate immune system.
The organelle that plays a major role in the phagocytic activity of macrophages is the lysosome. Lysosomes contain digestive enzymes which fuse with the phagosomes containing the ingested pathogens to effectively kill and digest these pathogens. Macrophages, along with neutrophils, are the primary phagocytes of the immune system that engulf pathogens, cellular debris, and foreign substances.