The structures of the prokaryotic cell can be labeled as follows:
- The structure labeled a is the pilus (plural, pili)
- The structure labeled b is the cytoplasm
- The structure labeled c is the plasma membrane
- The structure labeled d is the cell wall
- The structure labeled e is the capsule
- The structure labeled f is the flagella (singular, flagellum)
- The structure labeled g is the nucleoid
- The structure labeled h is the ribosome
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