At Thanksgiving dinner, you sit next to your uncle, an immunologist. "I'm a big eater," he says, "just like the cells I study." What type of cells does your uncle most likely study?

Question

BlackTom AI · Accepted Answer

When interpreting a clue about the immune system, context matters. This setup hints at cells known for eating and cleaning up debris.
Option 1: Monocytes. These are circulating precursors to macrophages and dendritic cells. While they can become macrophages, the phrasing about a 'big eater' points to the mature phagocytic cells rather than the circulating precursors, making this a less direct fit.
Option 2: Erythrocytes. Red blood cells carry oxygen and have no primary role in phagocytosis or immune defense, so this choice does not align with the idea of a cell type that engulfs invaders or debris.
Option 3: Macrophages. These are large phagocytic cells in tissues that engulf (eat) pathogens and dead cells, fitting the analogy of a big eater exactly. They play a central role in innate immunity and also help bridge to adaptive responses.
Option 4: Bacteriophages. These are viruses that infect bacteria, not human cells, so they do not relate to a human immune cell type and certainly do not represent an 'eating' immune cell within our body.
Option 5: Antibodies. Antibodies are soluble proteins produced by B cells and plasma cells, not cells themselves that perform phagocytosis, so this choice misses the cell-type focus implied by the question.

At Thanksgiving dinner, you sit next to your uncle, an immunologist. "I'm a big eater," he says, "just like the cells I study." What type of cells does your uncle most likely study?单项选择题

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