Final answer:
Bacteria can have different shapes, including cocci (spheres), bacilli (rods), and spirilli (spirals).
Step-by-step explanation:
Bacteria can have different shapes, including cocci (spheres), bacilli (rods), and spirilli (spirals). Cocci are spherical in shape, while bacilli are rod-shaped. Spirilli, on the other hand, are spiral-shaped. These shapes can be used to distinguish different types of bacteria.