Question

How can a phagocytic cell that engulfs dead cells tell the difference between a living cell and a dead cell? Dead cells are always smaller than all living cells. Phosphatidylserine is only exposed on the extracellular face of the plasma membrane in dying/dead cells. Living cells can actively inhibit phagocytosis using hormones whereas dead cells cannot. Dead cells epigenetically modify their histones to indicate that the cell is dead. Phagocytic cells sense DNA fragmentation in dying/dead cells.

          How can a phagocytic cell that engulfs dead cells tell the difference between a living cell and a dead cell?

Dead cells are always smaller than all living cells.
Phosphatidylserine is only exposed on the extracellular face of the plasma membrane in dying/dead cells.
Living cells can actively inhibit phagocytosis using hormones whereas dead cells cannot.
Dead cells epigenetically modify their histones to indicate that the cell is dead.
Phagocytic cells sense DNA fragmentation in dying/dead cells.

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How can a phagocytic cell that engulfs dead cells tell the difference between a living cell and a dead cell?

Dead cells are always smaller than all living cells.
Phosphatidylserine is only exposed on the extracellular face of the plasma membrane in dying/dead cells.
Living cells can actively inhibit phagocytosis using hormones whereas dead cells cannot.
Dead cells epigenetically modify their histones to indicate that the cell is dead.
Phagocytic cells sense DNA fragmentation in dying/dead cells.

Added by Shawn M.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Sri K

12/13/2022

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How can a phagocytic cell that engulfs dead cells tell the difference between a living cell and a dead cell? Dead cells are always smaller than all living cells; Phosphatidylserine is only exposed on the extracellular face of the plasma membrane of dying/dead cells. Living cells can actively inhibit phagocytosis using hormones, whereas dead cells cannot. Dead cells epigenetically modify their histones to indicate that the cell is dead. Phagocytic cells sense DNA fragmentation in dying/dead cells.

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