Final answer:
Bacteria can exhibit different spiral shapes such as vibrio, spirillum, and spirochete.
Explanation:
The spiral shape in bacteria can be observed in three forms: vibrio, spirillum, and spirochete. Vibrios are curved or comma-shaped rods, spirilla are long, thin, and wavy but not helical, while spirochetes are long, thin, wavy, and helical/corkscrew in shape.
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