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Home Q & A Board Biology-Related Homework Help Cell Biology
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ytegahd ytegahd
wrote...
12 years ago
which of the following cells would you expect to be engaged most heavily in bulk-phase endocytosis
a)an erythrocyte b)a pancreatic acinar c)a macrophage Why?

I say it is macrophage, but I don't know why.
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12 years ago
You're right, it's macrophage! This is because in endocytosis, the cell engulfs whatever. A macrophage needs to engulf pathogens or foreign objects in the body to present the pathogen on its cellular membrane - this causes an immune response. Look at the diagram I drew. The pancreas is exocytosis because it releases insulin - it doesn't engulf.
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